Quick Answer

Security Parts stocks 40 replacement components for the LCN 1260 and 1261 Series closer. The 1260 ships with the 1260-3077 regular arm and 1260-146 shaft cover as standard. Available parts include the 1261-3071 cylinder assembly, six regular arm variants, six hold-open arm variants, a CUSH arm family, EDA and HEDA arms, head and tube assemblies, rod and shoe components, standard cover, three mounting plate variants, and a full range of installation accessories. All 40 parts are stocked individually and available at Security Parts. Call 845-935-0301 for pre-order identification support.

What Is the LCN 1260 Series Door Closer?

The LCN 1260 Series is a light-to-medium duty, cast iron, surface-mounted door closer designed to fit the most common commercial door footprint at 3/4 inch by 9-1/16 inch hole spacing. It is universal and non-handed, meaning the same closer body installs on either a right-hand or left-hand door without specifying handing at order time. It mounts in three positions: hinge pull side, top jamb push side, and parallel arm push side.

The 1260 uses a non-sized cylinder adjustable from spring sizes 1 to 5. It handles interior doors to 4 feet 6 inches wide and exterior doors to 3 feet 6 inches wide. The closer body is cast iron with a full-complement bearing, a 1-3/8-inch diameter piston, and a 5/8-inch diameter heat-treated pinion journal. The all-weather hydraulic fluid performs across a wide temperature range without seasonal adjustment. The 1260 Series carries a 20-year limited warranty and is UL and cUL listed for self-closing doors without hold-open. It meets ANSI/BHMA A156.4 Grade 1 and ADA reduced opening force requirements.

The closer ships with peel-n-stick installation templates for accurate hole placement. An optional Quick Fix bracket kit (1260-18QF) is available for retrofit situations where existing mounting holes are damaged or when installing the 1260 on an opening that previously used the obsolete 1370 mounting pattern.

For a comparison of the 1260 against the 1460 and other LCN surface closer families, see the LCN 4110 Parts Guide and the LCN 4210 Parts Guide for related LCN surface closer series.

Why Does the LCN 1260 Series Page Show Model Number 1261?

This is the most common point of confusion when ordering LCN 1260 Series parts. The 1260 is the series number that identifies the closer body and all of its arm and accessory components. The 1261 is the cylinder model number that LCN uses to designate the cylinder assembly that ships inside the 1260 closer body.

LCN follows this convention across the entire surface-mounted line: the cylinder model number is one digit higher than the series number. The 1460 Series uses the 1461-3071 cylinder. The 4040 Series uses the 4041 cylinder. The 1260 Series uses the 1261-3071 cylinder. This is not an error on the product pages. Both numbers refer to the same closer family.

When ordering parts, use these prefixes:

• Use 1261- as the prefix for the cylinder assembly only.
• Use 1260- as the prefix for all arms, covers, mounting plates, accessories, and screw packs.

Numbers like "71" or "320G" stamped on the cylinder body are manufacturing reference numbers, not part numbers or model identifiers. They cannot be used to order replacement parts. The correct model number is on the sticker located on the cylinder body under the cover.

What Parts Are Available for the LCN 1260 Series?

All 40 LCN 1260 and 1261 Series replacement parts stocked at Security Parts are organized below by component category. Every part has been verified live at the time of publication.

LCN 1261 Cylinder Assembly

The 1261-3071 standard cylinder assembly is the complete closer body for the LCN 1260 Series. It is non-handed and non-sized, adjustable for spring sizes 1 to 5. This is the replacement when the closer cylinder body is damaged or leaking beyond adjustment. The hydraulic fluid in an LCN closer cannot be refilled in the field. A leaking 1261 cylinder requires replacement of the cylinder assembly or the full closer body, not a fluid refill.

LCN 1260 Arm Selection: Which Arm Do I Need?

The 1260 Series offers a wider arm selection than most facilities managers realize. All regular arms and most hold-open arms are non-handed, meaning one part number fits both right-hand and left-hand doors. The HEDA (Hold Open Extra Duty Arm) is the notable exception and is handed.

What Is the Difference Between the Regular, EDA, and CUSH Arms on the LCN 1260?

The 1260-3077 regular arm is the standard non-held-open arm that ships with the 1260 closer. It mounts hinge side or top jamb and provides basic door control with no hold-open function and no built-in door stop.

The EDA (Extra Duty Arm) series uses a heavier forged steel construction for high-traffic doors. The 1260-3077EDA/G adds a thick hub shoe (62G) that provides additional clearance past a blade stop in the door frame. Use the EDA family on openings with heavy use or where the standard arm has bent or cracked under repeated impact.

The CUSH arm (Cush-N-Stop) provides a built-in door stop in the soffit shoe. When the door reaches the end of its travel, the shoe contacts the frame and stops the door without a separate overhead or wall stop. Installing a CUSH arm with a separate overhead stop is redundant and not recommended because both mechanisms compete on the same opening. When a CUSH or EDA arm is used, the 1260-30 CUSH Shoe Support is required if the frame reveal is less than 3-1/16 inches, and the 1260-419 panel adapter is required when the head frame is flush or rabbeted.

Head and Tube Assemblies, Rod and Shoe, and Arm Components

LCN 1260 Covers: Standard Cover vs Shaft Cover

The LCN 1260 ships from the factory with a shaft cover (1260-146), not a standard plastic cover. This is an important difference from the 1460 Series, which ships with the 1460-72 slim line cover as standard.

The LCN cover part number convention applies to the 1260: the series number followed by -72. The 1260 cover is 1260-72. This convention holds across all standard LCN surface-mounted series, but the physical shape is series-specific. A 1260-72 cover cannot be substituted for a 1460-72 or any other series cover even though the numbering pattern is the same.

When Is an LCN 1260 Drop Plate Required?

This is one of the most frequently asked questions in the professional locksmith and door hardware community about the 1260 Series. Three distinct trigger conditions apply across the three mounting plate variants.

1260-18: Hinge Side and Top Jamb Drop Plate

The 1260-18 mounting plate is required in two situations:

• Hinge side (pull side) mount where the top rail is less than 2-1/2 inches measured from the stop.
• Top jamb push side mount where the head frame is less than 1-3/4 inches or a flush ceiling condition exists.

The plate requires a minimum top rail of 1-1/2 inches (38 mm) or a minimum head frame of 1-1/4 inches (32 mm).

1260-18PA: Parallel Arm Push Side Drop Plate

The 1260-18PA mounting plate is required for parallel arm push side mounting where the top rail is less than 4-3/8 inches (111 mm) measured from the stop. The plate requires a minimum top rail of 1-3/4 inches (44 mm). This plate is also required for all EDA and CUSH arm installations in the parallel arm push side configuration.

1260-18QF: The Quick Fix Bracket Kit

The 1260-18QF mounting plate is not a drop plate in the traditional sense. It is a retrofit kit that serves two specific situations:

• Adapting the LCN 1260 closer to the obsolete 1370 mounting hole pattern when replacing an old 1370-series closer in an existing opening.
• Covering damaged or stripped mounting holes in a door or frame where the original fastener positions can no longer hold the closer securely.

The 1260-18QF includes retrofit mounting plates for both the closer cylinder and the shoe. It is not a standard installation accessory and is not triggered by top rail depth.

LCN 1260 Shoes and Installation Accessories

Several accessories are required or optional depending on frame conditions and the arm type selected. These are the most common items missed at the time of initial order, and their absence delays installation.

LCN 1260 Arm Screws and Screw Packs

The correct arm screw depends on the arm type and mounting configuration. Using the wrong arm screw can result in the arm slipping or failing to hold the door position correctly.

How Do I Order the Correct LCN 1260 Replacement Part?

Confirm the following before placing any order to avoid receiving a part that does not fit the installed closer.

View all 40 LCN 1260 parts and diagrams at Security Parts commercial door closer parts. Call 845-935-0301 for pre-order identification support or to confirm specifications before ordering.

Troubleshooting Common LCN 1260 Field Issues

For installation guidance, see how to install a commercial door closer. For further adjustment help, call Security Parts at 845-935-0301.

LCN 1260 vs LCN 1460: What Is the Difference?

The 1260 and 1460 are both universal, non-handed LCN surface-mounted closers and are often specified on the same building. They look similar in the field, which creates ordering confusion. The differences matter for parts ordering because arms, hold-open arms, and the 62PA shoe are NOT interchangeable between the two series.

Where Is the LCN 1260 Specified and Where Does It Appear in the Field?

The LCN 1260 is one of the most widely installed light-to-medium duty commercial door closers in North America. Its ability to fit the most common commercial mounting footprint (3/4 inch by 9-1/16 inch hole spacing) means it installs in a large percentage of existing commercial openings without requiring new holes. This footprint compatibility is the reason it appears across so many building types.

Common 1260 installation locations include:

• Office building interior doors where ADA-compliant opening force is required and the door sees moderate daily traffic
• Retail storefront interior doors where the closer must mount on a narrow top rail or on top jamb because the door is aluminum-framed glass
• School interior corridor doors where a non-handed, quick-to-install closer simplifies building-wide replacement projects
• Healthcare facility interior doors where the door width is within the 4 foot 6 inch interior door limit
• Hotel room and corridor doors where the 20-year warranty and light-to-medium duty rating match the expected traffic level
• Replacement projects where the installer is replacing an obsolete 1070-series or 1370-series closer and wants to use the existing mounting holes

The 1260 is not appropriate for high-traffic institutional applications where the door sees several hundred cycles per day and where the heavier duty rating of the 1460 or the 4000 Series is the correct specification. For guidance on selecting the right closer for a specific application, see the LCN 4110 Parts Guide or call Security Parts at 845-935-0301.

LCN 1260 Body Specifications and Construction Details

Understanding the internal construction of the 1260 helps maintenance staff identify when a part can be adjusted or repaired versus when the full cylinder assembly needs replacement.

• Cylinder body: Cast iron
• Bearing: Full-complement bearing
• Piston diameter: 1-3/8 inches
• Pinion journal diameter: 5/8 inch, heat-treated steel
• Fluid: All-weather hydraulic fluid
• Arm material: Forged steel
• Spring sizes: Non-sized, adjustable from size 1 to 5
• Mounting footprint: 3/4 inch by 9-1/16 inch center-to-center hole spacing (matches most common commercial pattern)
• Certifications: ANSI/BHMA A156.4 Grade 1, UL and cUL listed, ADA compliant, BAA (Buy American Act) compliant
• Warranty: 20-year limited

The all-weather hydraulic fluid performs across a wide temperature range without seasonal closing speed adjustment. Regulation valves control general closing speed, latch speed, and backcheck. Do not open any regulation valve more than three turns from the fully closed position. The hydraulic fluid cannot be refilled in the field. A closer that has lost hydraulic fluid requires replacement of the 1261-3071 cylinder assembly.

How to Identify the LCN 1260 Model Number in the Field

The most common mistake technicians make when ordering 1260 Series parts is reading the casting or forging number stamped on the cylinder body surface and trying to order parts using that number. Numbers like "71" or "320G" stamped on the 1261 cylinder body are manufacturing reference numbers, not part numbers or model designations. They cannot be used to identify or order replacement parts.

The correct method for identifying the LCN 1260 Series in the field:

1. Remove or open the cover on the closer body.
2. Look for the model identification sticker on the cylinder body. The sticker shows the model number (for example, 1261) and typically includes a date code.
3. The date code is a four-digit number. The first two digits indicate the week of manufacture. The last two digits indicate the year. For example, "2322" means the 23rd week of 2022.
4. Confirm the series (1260) and use 1260 as the prefix for all arm, cover, and accessory part numbers. Use 1261 as the prefix when ordering the cylinder assembly.

If the sticker is worn or missing, the model can often be confirmed by the mounting footprint. The 1260 uses the standard 3/4 inch by 9-1/16 inch hole pattern. If the existing holes match this pattern and the closer body is a cast iron surface-mounted closer sized for a door up to 4 feet 6 inches wide, the 1260 is the correct series.

LCN 1260 Arm Cross-Compatibility: What Works on Other Series

One of the most useful facts for maintenance teams managing buildings with multiple LCN closer models is that the 1260-3077 regular arm is compatible with several other LCN series. However, the hold-open arm, the 62PA parallel arm shoe, and the CUSH and EDA arms are series-specific and cannot be shared.

The spindle on the 1260 and 1460 is different from the spindle on the 4040XP. This means that arms from the 4040XP cannot be used on the 1260 or 1460. Confirm the installed closer series from the model sticker before ordering any arm replacement.

About Security Parts

Security Parts has supplied genuine OEM commercial door hardware replacement components to locksmiths, glaziers, facilities managers, contractors, and security integrators since 2001. All 40 LCN 1260 and 1261 Series replacement parts listed in this guide are stocked and available for individual order. The 1260 and 1460 arms, hold-open arms, and 62PA shoes are not interchangeable despite the series numbers being sequential. Confirm the installed series from the model sticker under the cover before placing any order. For pre-order identification support, call 845-935-0301. Security Parts has stocked and shipped genuine OEM commercial door hardware replacement components since 2001. Every part page includes a diagram view and a parts lookup tool organized by series and model number, so technicians can confirm the correct part number before placing an order. The 1260 series is a common replacement project for anyone managing older buildings with obsolete 1070-series or 1370-series closers, and the 1260-18QF Quick Fix bracket kit was specifically designed for that retrofit scenario. Confirm the installed model and the frame conditions before ordering to avoid returns and delays on any 1260 Series parts project.

LCN 1260 Peel-N-Stick Templates and Installation Notes

The LCN 1260 Series ships with peel-n-stick installation templates that eliminate the need to mark and measure mounting hole positions manually. Each template sticks directly to the door or frame, shows the exact drill points for the selected mounting configuration, and peels off cleanly after installation. Template numbers vary by mounting type: template 29804 covers pull side and top jamb mounts, template 29805 covers the parallel arm push side mount, template 29808 covers the EDA mount, template 29809 covers CUSH and Spring CUSH mounts, template 29810 covers drop plate installations, template 29811 covers the Quick Fix bracket, and template 29901 covers the 62A shoe installation. These template numbers are reference information only. The templates are included in the closer package or in the relevant arm and accessory kits when ordering from Security Parts.

For fire-rated door applications, confirm the fire rating of the door assembly and the specific hold-open requirements with the authority having jurisdiction before specifying any hold-open closer or arm. See the commercial door fire rating guide for guidance on fire rating requirements for commercial door hardware.

Related Resources at Security Parts

• Commercial Door Closer Parts and Diagrams
• LCN 1000 Series and Overhead Concealed Door Closer Parts Guide
• LCN 4110 Parts Guide
• LCN 4210 Parts Guide
• How to Install a Commercial Door Closer
• Commercial Door Fire Rating Guide

Quick Answer

Security Parts stocks 75 replacement components for the LCN 4110 and 4110T Smoothee series. The 4110 is a parallel arm push side closer and the EDA arm is shipped as standard. Optional arms include the CNS Cush-N-Stop, the SCNS Spring Cush-N-Stop (unique to the 4110 family), and hold-open variants for each. The 4110 also carries a full range of fusible link arm components for fire-rated door applications. Arms, covers, and drop plates are specific to the 4110 or 4110T and cannot be interchanged between the two. Confirm the model number, hand, and arm type before ordering. Call 845-935-0301 for identification support.

What Is the LCN 4110 Smoothee Series?

The LCN 4110 Smoothee Series is a heavy duty, cast iron surface-mounted door closer designed exclusively for parallel arm push side installations. It is purpose-built for institutional and high-traffic commercial applications including classroom doors, auditorium doors, healthcare corridor doors, and any opening where the closer body must mount on the push side and the arm must run parallel to the door to keep the hardware as concealed as possible.

The 4110 is application-specific, which means it is engineered for one mounting position only. It cannot be converted to regular arm or top jamb mount in the field. When a 4110 is ordered, the hand of the door (right or left) must be specified at the time of order. The 4110 ships with the Extra Duty Arm (EDA) as standard, a standard plastic cover, the 4110-201 fifth hole spacer, and self-reaming and tapping screws.

What Is the LCN Green Dial on the 4110?

The LCN Green Dial is a patented spring power indicator built into the 4110 (and all 4000 Series) closer body. It provides a direct visual reading of the current spring power setting without requiring the cover to be removed or the cylinder to be replaced. A technician can verify and adjust the spring power setting in the field by reading the Green Dial position. When a 4110 begins closing too slowly or fails to latch, checking and increasing the Green Dial spring setting is always the correct first step. Most unnecessary cylinder replacements on 4110 installations happen because the technician did not know the spring power was adjustable on the existing cylinder.

The 4110 series uses a flat-sided oval spindle, the same spindle geometry as the 4010 and 4020 series. This matters for parts ordering: arms from the 4040XP (hex spindle) and 1460 (star spindle) do not fit the 4110. All arm replacement orders must specify the correct series designation (4110) to ensure spindle compatibility.

The LCN 4110 carries a 30-year warranty and holds the following certifications: ANSI A156.4 Grade 1, UL 10C, ADA, 100-hour salt spray (more than four times the ANSI standard for corrosion resistance), and the BAA Buy American Act requirement. The fusible link arm assemblies carry UL Listing number R1943. The 4111 cylinder meets ADA opening force requirements. The closer and its components are made in the USA.

Inside the 4110 body: a cast iron cylinder with a full complement bearing, a 1-1/2-inch diameter piston, and an 11/16-inch diameter double heat-treated pinion journal. Full rack and pinion hydraulic action drives the closing speed. The all-weather Liquid X hydraulic fluid performs without variation from -30 degrees F to +120 degrees F, so the 4110 never needs seasonal closing speed adjustment. The Peel-N-Stick installation templates simplify field installation: template 28479 covers regular arm mounts, 28481 covers CUSH and Spring CUSH mounts, 28501 covers the drop plate, and 26367 covers the fusible link arm.

What Are the LCN 4110 Cylinder Options?

The LCN 4110 series uses model numbers 4111 through 4116. The cylinder model number is stamped on the closer body near the packing nut. Numbers such as "71" or "320G" found elsewhere on the body are manufacturing reference numbers, not model numbers, and cannot be used to order parts.

Optional cylinder upgrades available on the 4110 series:

• AVB (Advanced Variable Backcheck): Backcheck begins at approximately 45 degrees instead of the standard 75 degrees, providing earlier resistance against the door being pushed or blown open aggressively. Especially useful with the SCNS arm on high-abuse openings.
• DEL (Delayed Action): The door holds at the maximum opening position for an adjustable delay of up to approximately one minute before the closer begins its closing sweep. Not available with the 4116 cylinder.
• TEL (Time-Controlled Electro-Hydraulic): An electrified delayed action option. Confirm availability for specific applications.

For a full comparison of the 4110 against other 4000 Series closers, see the LCN 4000 Series parts guide. For installation and adjustment guidance, see how to install a commercial door closer and how to adjust a commercial door closer.

What Is the Difference Between the LCN 4110 and 4110T?

The 4110 and 4110T share the same cast iron cylinder body but use entirely different arm systems. Knowing which variant is installed determines which arm, cover, and drop plate to order.

Always verify the variant stamped on the closer body before ordering. The model number is located near the packing nut at the base of the pinion. Numbers such as "71" or "320G" found stamped elsewhere on the cylinder are manufacturing reference numbers and cannot be used to order parts.

What Is the Difference Between the LCN 4110 and 4210?

Both the 4110 and the 4210 are Smoothee series parallel arm push side closers. They share a similar application profile and look similar in the field, which causes ordering confusion. The key differences are in the security specification and fastener system.

The 4210 is the high security variant. It ships with TORX machine screws as standard rather than SRT screws, and uses a four-point metal security cover mounting rather than two-point. The 4210 is specified for correctional, vandal-prone, and institutionally secure applications where tampering resistance is a priority. The 4110 is specified for standard institutional and high-traffic commercial applications that do not require the elevated tamper resistance of the 4210.

Parts are not cross-compatible between the 4110 and 4210 series. Covers, arm screws, and drop plates are series-specific. The 4110 SCNS Spring Cush-N-Stop arm family is not available on the 4210. For a detailed comparison, see the LCN 4210 parts guide.

What LCN 4110 Parts Are Available?

All 75 LCN 4110 and 4110T Smoothee series replacement parts stocked at Security Parts are organized below by component category.

Arm Selection: Which LCN 4110 Arm Do I Need?

Arm selection is the most common parts decision on the LCN 4110 series. The 4110 offers more arm variants than most other LCN closer families, including the Spring Cush-N-Stop (SCNS) family that is unique to this series.

What Is the LCN 4110 Extra Duty Arm (EDA)?

The 4110-3077EDA Extra Duty Arm is the standard arm shipped with the LCN 4110 closer. It is a non-handed, heavy duty parallel arm that mounts push side only. The degree of door opening is set at installation by the template used, with options at 100 degrees, 140 degrees, and 180 degrees.

Because the EDA arm is non-handed, a single part number fits both right-hand and left-hand doors. If a door stop is also required, it must come from a separate overhead stop device rather than the arm itself. The hold-open version is the 4110-3049EDA Hold Open Extra Duty Arm, which is handed and must be specified right-hand or left-hand at order.

What Is the LCN 4110 Cush-N-Stop (CNS) Arm?

The 4110-3077CNS Cush-N-Stop Arm is an optional handed arm with a built-in stop in the soffit shoe. When the door reaches its templated maximum opening angle, the arm contacts the stop and arrests the door without needing a separate overhead or wall stop device. This simplifies the hardware specification on openings where both a closer and a stop are needed.

The CNS arm is handed and must be specified as right-hand or left-hand. The drop plate (4110-18) is required for CNS arm installations. The CUSH shoe support (4110-30) is required when the frame reveal is less than 3-1/16 inches. The fifth hole spacer (4110-201) provides the mounting point for the fifth shoe screw. Installing a CNS arm with a separate overhead stop device is redundant and not recommended since both mechanisms would compete on the same door.

What Is the LCN 4110 Spring Cush-N-Stop (SCNS) Arm?

The Spring Cush-N-Stop (SCNS) arm is a feature of the 4110 series that competitors and parts distributors rarely explain in depth. The 4110-3077SCNS Spring Cush-N-Stop Arm provides a built-in door stop like the CNS arm, but adds a spring-loaded cushion mechanism that absorbs the impact shock when the door hits the stop.

On high-cycle doors, the repeated impact of the door reaching maximum opening transfers significant force through the arm and into the closer body and pinion. The spring cushion in the SCNS arm dissipates this force rather than transmitting it directly, reducing long-term wear on the closer, the arm pivot, and the surrounding door hardware. The SCNS arm is specifically recommended for applications using Advanced Variable Backcheck (AVB), where the closer is adjusted to resist door opening force earlier in the swing, creating conditions where the door hits the stop with greater impact.

The SCNS arm is non-handed, which is an operational advantage over the CNS arm on large institutional hardware orders. The hold-open version is the 4110-3049SCNS Hold Open Spring Cush-N-Stop Arm. The 4110-3080 Spring Cush Block assembly (which includes the spring screw 4110-58 and block 4110-80G) is the replaceable spring mechanism used in the SCNS arm system when the cushion component itself requires servicing.

What Are the LCN 4110 Fusible Link Arm Components?

The LCN 4110 is one of three LCN surface closer series (alongside the 4010 and 4020) that offers a complete fusible link arm system for fire-rated door applications. The fusible link arm components allow the 4110 to be installed as a hold-open closer on a fire-rated door while still meeting the requirement that the door must close automatically when exposed to elevated temperatures from a fire event.

The fusible link melts at 165 degrees F, releasing the hold-open function and allowing the closer spring to return the door to the closed and latched position. This is a code-required feature on fire-rated doors where a hold-open closer is otherwise installed.

For guidance on fire-rated door hardware requirements and compliance, see the commercial door fire rating guide.

LCN 4110T Track Arm Components

The 4110T uses a track arm system in place of the parallel rod and shoe. The track arm is handed and must be specified at order.

LCN 4110 Covers: Standard vs Metal Security

The LCN 4110 series offers two cover types: a standard plastic cover and a metal security cover. The cover is finish-specific and must be specified with the correct finish code to match the installed hardware.

The cover screw for the 4110 is the 4110-31. The 4110T uses the 4110T-31 cover screw. These are not interchangeable.

When Is the LCN 4110-18 Drop Plate Required?

The 4110-18 Drop Plate has two trigger conditions that require it to be included in an installation.

• The top rail is less than 5-1/8 inches measured from the stop on a push side parallel arm mount.
• Any CNS (Cush-N-Stop) or SCNS arm installation, regardless of top rail depth.

The plate requires a minimum top rail of 2 inches measured from the stop. If the top rail is less than 2 inches, the drop plate cannot be used on that opening.

A frequently asked question from the LCN community is whether the 4110-18 and the 4110-18 CUSH drop plates are different parts. They are physically identical. The designation "CUSH" refers only to the installation template used on the door, not to any difference in the plate itself.

The 4110T uses the separate 4110T-18 drop plate, which is specific to the track arm variant and cannot be substituted for the 4110-18.

LCN 4110 Accessories: Cush Shoe Support, Blade Stop Spacer, and Panel Adapter

Several accessories are required or optional depending on the frame conditions at the specific installation. These are frequently missed at order time and are the most common cause of delayed installations on CNS and SCNS arm applications.

What Is the LCN 4110-30 Cush Shoe Support?

The 4110-30 Cush Shoe Support provides anchorage for the fifth screw used with CNS and SCNS arms when the frame reveal is less than 3-1/16 inches. On a standard CNS or SCNS arm installation, the CUSH shoe is mounted to the frame with five screws. The fifth screw provides critical anchorage because the built-in stop generates significant force at the shoe connection point each time the door reaches its maximum opening angle. When the frame reveal is too narrow for a standard five-screw installation, the CUSH shoe support provides the mounting surface for that fifth screw. Without it, repeated door stops can pull the shoe away from the frame over time.

What Is the LCN 4110-61 Blade Stop Spacer?

The 4110-61 Blade Stop Spacer is used when a 1/2-inch blade stop is installed in the door frame. The spacer lowers the parallel arm shoe to clear the blade stop during door travel. Without the spacer, the shoe contacts the blade stop before the door reaches its full intended opening angle, limiting door travel and potentially damaging the arm.

What Is the LCN 4110-419 Panel Adapter?

The 4110-419 Panel Adapter is needed when the CUSH shoe must mount to a single rabbeted or flush frame that does not present a horizontal mounting surface for the shoe. The adapter provides the horizontal surface the CUSH shoe requires for a correct CNS or SCNS arm installation.

What Is the LCN 4110-201 Fifth Hole Spacer?

The 4110-201 Fifth Hole Spacer provides the positioning point for the fifth mounting screw at the CUSH shoe. The standard 4110 closer ships with the 4110-201 included. Order this spacer whenever specifying any CNS or SCNS arm installation where the fifth screw position must be established.

LCN 4110 Screw Packs: SRT, TORX, and Thru-Bolt Options

The standard LCN 4110 ships with SRT (self-reaming and tapping) screws, unlike the 4210 which ships with TORX screws as standard. The 4110 series offers the full range of screw pack options for both the 4110 and 4110T variants.

How Do I Order the Correct LCN 4110 Replacement Part?

Confirm each of the following before placing an order to avoid receiving a part that does not fit the installation.

View all LCN 4110 and 4110T parts and diagrams at Security Parts commercial door closer parts. Call 845-935-0301 for pre-order identification support or to confirm specifications before ordering.

Troubleshooting Common LCN 4110 Field Issues

LCN 4110 vs LCN 4040XP: Which Parallel Arm Closer Do I Have?

Facilities managers and locksmiths sometimes encounter both the 4110 and the 4040XP mounted in parallel arm configuration on the same building, which leads to ordering confusion. The two closers look similar from across a hallway but use completely different spindle geometry and arm families.

The 4110 uses a flat-sided oval spindle and mounts push side only in parallel arm configuration. It ships with the EDA arm as standard. The 4040XP uses a six-sided hex spindle and can be mounted in regular arm, parallel arm, and top jamb configurations. An arm from the 4040XP family will not fit on a 4110 and vice versa. Confirm which model is installed by reading the model number stamped near the packing nut on the closer body before ordering any arm replacement. For a detailed guide to the 4040XP arm family, see the LCN 4040XP parts guide.

LCN 4110 Applications: Where Is This Closer Specified?

The LCN 4110 Smoothee is specified in applications where the door control must mount on the push side with a parallel arm configuration. This is the standard specification for many institutional building types because it keeps the closer body and arm concealed from the pull side of the door, reducing tampering risk and maintaining the appearance of the opening.

Common 4110 application types include:

• Classroom doors in K-12 schools and university buildings, where the closer body must face the corridor and not the classroom interior
• Auditorium and assembly room doors where the push side faces a public area
• Healthcare corridor doors where infection control and cleanability favor hardware mounted on the corridor side
• Government building interior doors where the push side faces a public or controlled area
• Office suite entrance doors where the arm and closer body should not be visible from the reception area
• Fire-rated corridor doors where the 4110-3049FL fusible link arm is required for code-compliant hold-open operation

The 4110 is not appropriate for regular arm or top jamb installations. Those applications require the 4010, 4020, 4030, or 4040XP series. For guidance on selecting the correct LCN closer series for an application, see the LCN door closer selection guide and the commercial door closer sizing guide.

Can the LCN 4110 Be Used With a Door Coordinator?

Yes, but a specific mounting solution is required. When the 4111 is used with a bar-style door coordinator, IVES MB mounting brackets are required. These brackets wrap around the coordinator to provide a surface for mounting the parallel arm shoe. Without the IVES MB brackets, the parallel arm shoe cannot mount correctly when a bar-style coordinator is present across the top of the door frame. Contact Security Parts at 845-935-0301 to confirm the correct bracket configuration before ordering.

Can the LCN 4110 EDA Be Used With a Glynn Johnson Overhead Stop?

This is one of the most frequently asked questions from the professional locksmith and door hardware community about the 4110. Two different scenarios apply depending on which Glynn Johnson overhead stop is installed.

For the GJ901 through GJ904 series: Special Template ST-2730 is required to mount the 4110 EDA closer with these overhead stops. If a drop plate is also required on the same opening, use the 4010-18 drop plate, not the 4110-18 drop plate. The two plates are not interchangeable in this specific combination.

For the Glynn Johnson GJ100 concealed overhead stop series: No special template is required. The 4110 EDA closer drops far enough on the door that it does not conflict with the GJ100 series concealed overhead stop, and the two can be mounted together using standard 4110 installation templates.

LCN 4110 Maintenance: What Does This Closer Require?

Closers mounted according to LCN installation instructions require no periodic maintenance or seasonal adjustments. The all-weather hydraulic fluid in the 4110 performs consistently across the full operating temperature range without the need for spring or speed adjustments between seasons.

The one service item that is regularly needed on high-cycle 4110 installations is spring power adjustment using the Fast Power Adjust indicator on the closer body. If a 4110 begins closing too slowly or fails to latch reliably, increasing the spring power setting is the correct first step before any cylinder replacement is considered. Most unnecessary cylinder replacements on 4110 installations happen because the technician is not aware that the spring power is adjustable without removing the cover or replacing the cylinder.

If a 4110 develops a hydraulic fluid leak, the fluid cannot be refilled in the field. Attempting to refill the hydraulic fluid voids the warranty. A leaking closer requires replacement of the cylinder assembly or the full closer body depending on where the leak originates. Call 845-935-0301 for guidance before ordering any replacement part on a leaking 4110.

The CUSH shoe and arm connections on CNS and SCNS arm installations should be inspected annually on high-cycle doors. The fifth screw connection at the shoe is the most common failure point on heavy-traffic CUSH arm applications. If the shoe is showing movement or the fifth screw connection is loose, inspect the CUSH shoe support (4110-30) and fifth hole spacer (4110-201) for correct installation before replacing the arm assembly.

About Security Parts

Security Parts has supplied genuine OEM commercial door hardware components to locksmiths, glaziers, facilities managers, contractors, and security integrators since 2001. All 75 LCN 4110 and 4110T Smoothee series replacement parts listed in this guide are stocked and available for individual order. The LCN 4110 series has more arm variants than most other LCN closer families, and ordering errors on handing, arm type, and accessory requirements are common. Confirm the installed model number, hand, and arm configuration before placing any order. Call 845-935-0301 for pre-order identification support. Security Parts stocks genuine OEM LCN components, ensuring that replacement parts match the original specifications for fit, material, and code compliance. The 4110 series has one of the widest arm option ranges of any LCN surface closer, and confirming the correct arm type, handing, and accessory requirements before ordering prevents the most common return and delay scenarios.

Related Resources at Security Parts

• Commercial Door Closer Parts and Diagrams
• Door Closers Parts Guide
• LCN 4000 Series Parts Guide
• LCN 4210 Parts Guide
• LCN 4040XP Parts Guide
• LCN Door Closer Selection Guide
• Commercial Door Closer Sizing Guide
• How to Install a Commercial Door Closer
• How to Adjust a Commercial Door Closer
• Commercial Door Fire Rating Guide

Quick Answer

Security Parts stocks 21 replacement parts for the LCN 9150 Benchmark electromechanical swing door operator. The key components are the 9150-3454S motor gearbox assembly with switch, the 9150-3462SC standard control box, the 9150-77 main arm, the 9150-3077 regular arm and 9150-3077L long arm, the 9150-79 rod and shoe, the 9150-72MC metal cover, the 9150-3018 mounting bracket, the 9150-360 24v SO kit, three switch bracket sizes, three screw pack variants, and cover components. All 21 parts are confirmed in stock.

What Is the LCN 9150?

The LCN 9150 is a low-energy electromechanical swing door operator in the LCN Benchmark series. It is designed for top-jamb push-side mounting on paired interior commercial doors and is widely installed in healthcare facilities, government buildings, universities, and commercial offices where ADA-compliant automatic access is required.

The 9150 operates by using a motor gearbox to physically swing the door open on activation, hold it open for an adjustable period, then close it. It includes Push N Go activation, which allows non-switch activation when a pedestrian manually pushes the door to approximately 5 degrees. The operator detects the movement and takes over, carrying the door to the full open position automatically. Power Boost provides additional closing force near the latch to overcome wind load and seal resistance.

The 9150 meets ANSI/BHMA A156.19, ANSI A117.1, UL 325, and ADA requirements, and is UL listed for fire-rated applications.

How Does the LCN 9150 Differ from the 9130 and 9140?

All three models belong to the Benchmark series and share the same part families. The mounting configuration is what separates them:

The 9150 ships with two motor gearboxes and two control boxes, one for each door leaf. If you have a pair of doors with an operator across the full header, you have a 9150 installation. For the full Benchmark series parts catalog, see the LCN 9130/9140/9150 Benchmark series page.

What Parts Does the LCN 9150 Come With from the Factory?

The LCN 9150 ships from the factory with the following components included as standard:

• Motor gearboxes (two, one per door leaf)
• Control boxes (two, one per door leaf)
• Mounting plate (operator mounting bracket)
• Regular arms (two, one per leaf)
• 72-inch metal cover (non-handed, extruded aluminum)
• Wood and machine screw packs

Actuators, wall switches, motion sensors, and other activation devices are not included in the standard shipment and must be ordered separately.

LCN 9150 Parts by Component Category

Motor Gearbox Assembly

LCN 9150-3454S Motor Gearbox Assembly with Switch. The primary drive unit for the LCN 9150 operator. View product page.

How Do I Know If the Motor Gearbox Has Failed?

The motor gearbox is the most costly replacement component on the 9150. Before ordering, confirm the failure is in the motor gearbox and not the control box or wiring. The control box has two LED indicator lights: one showing power to the control box itself and one showing power to the motor gearbox. If the motor gearbox LED is off while the control box LED is on, the fault is in the motor gearbox or the cable connection between the two units. If both LEDs are off, the fault is upstream in the power supply or wiring.

Motor gearbox failure symptoms include the door not moving at all when an activation signal is received, the arm moving weakly without enough force to open the door against normal resistance, or the door opening but not completing the full travel arc.

Control Box

LCN 9150-3462SC Standard Control Box. The microprocessor controller that manages all operator functions including Push N Go, opening time, hold-open delay, and Power Boost. View product page.

What Does Push N Go Do and Why Does It Matter for Parts?

Push N Go is the feature that allows the 9150 to operate without a wall switch or sensor activation. When someone manually pushes the door open to approximately 5 degrees, the control box detects the movement through the motor gearbox's built-in sensor and takes over, carrying the door to the full open position. After the hold-open delay expires, the control box signals the motor gearbox to close the door.

When Push N Go stops working -- the door opens manually but the operator does not take over -- the fault is almost always in the control box or the connection between the control box and motor gearbox, not in the motor gearbox itself. Replacing the control box (9150-3462SC) is the correct diagnostic step before replacing the motor gearbox (9150-3454S).

How Do I Identify a Failed Control Box Versus a Failed Motor Gearbox?

• Control box fault: Door does not respond to activation signals. Push N Go not working. Door opens but does not hold for the set delay. Opening or closing speed cannot be adjusted. Both LEDs off when power is confirmed at the wall outlet.
• Motor gearbox fault: Control box LED is on but motor gearbox LED is off. Door does not move despite a valid activation signal. Arm moves but without enough force to open the door. Unusual noise from the operator housing during activation.

Mounting Bracket

LCN 9150-3018 Mounting Bracket. The standard bracket that mounts the motor gearbox to the header frame. View product page.

Arms

LCN 9150-77 Main Arm. The primary connection arm between the operator spindle and the door. View product page.

How Do I Choose Between the Regular Arm and the Long Arm?

Measure the reveal of the installation. The reveal is the distance from the face of the door to the face of the frame on the push side. If the reveal is 6 inches or less, the 9150-3077 regular arm is correct. If the reveal is between 6 inches and 9-3/4 inches, the 9150-3077L long arm is required. Using the regular arm on a reveal that requires a long arm will result in incorrect arm geometry and poor door control. The operator will not be able to swing the door to the full open angle.

Rod and Shoe

LCN 9150-79 Rod and Shoe. Connects the arm to the door surface on push-side installations. View product page.

Cover and Trim Components

AC Power Cable

Secondary Output (SO) Kit

Switch Brackets

The switch bracket positions the on/off switch at the end of the operator cover. The correct size depends on the door width and the length of the cover assembly. Measure the installed cover length to determine which bracket size applies.

Screw Packs

Documentation and Packaging

Troubleshooting Common LCN 9150 Problems

Why Is the LCN 9150 Not Opening the Door?

Check in this order before ordering parts:

1. Confirm the on/off switch on the operator cover is set to On. This is the most common service call for an operator that appears dead.
2. Confirm power is reaching the control box. Check the LED on the control box. If it is off, the fault is in the power supply, circuit breaker, or wiring to the unit, not in the operator itself.
3. If the control box LED is on but the motor gearbox LED is off, check the AC power cable (9150-3498-2A) connection between the two units. If the cable is secure and the motor gearbox LED is still off, the motor gearbox (9150-3454S) needs replacement.
4. If both LEDs are on and the door still does not open on activation, try a manual Push N Go activation. If Push N Go works but switch activation does not, the fault is in the activation device (wall switch, sensor, or actuator), not in the operator components.

Why Is the LCN 9150 Not Holding the Door Open?

The hold-open delay is set by the potentiometer on the control box (9150-3462SC). If the door is not holding open for the expected duration, the potentiometer setting may have drifted or the control box may have lost its settings. Adjust the hold-open time potentiometer on the control box. If adjustments have no effect, the control box needs replacement.

Why Is the LCN 9150 Door Closing Too Hard or Too Fast?

Opening speed and closing speed are both adjustable via potentiometers on the control box. If the door is closing too fast or with too much force, the closing speed setting may have been changed or the Power Boost setting may be too high. Adjust the closing speed and Power Boost potentiometers on the 9150-3462SC control box. If the behavior cannot be corrected through adjustment, the control box needs replacement.

Why Is the Arm Not Reaching the Door on the Push Side?

If the arm is not reaching the door or the geometry appears incorrect, the arm may be the wrong type for the reveal depth. Measure the reveal from the door face to the frame face on the push side. A reveal over 6 inches requires the 9150-3077L long arm and the 9150-79LR long rod and shoe. Using the standard 9150-3077 arm on a deep-reveal installation is the most common arm-related service error.

LCN 9150 Installation Requirements That Affect Part Selection

Before ordering any replacement arm, rod, bracket, or cover for the LCN 9150, confirm the installation dimensions. The 9150 is a paired-door operator and its parts selection depends on several measurable site conditions.

What Are the Head Frame and Top Rail Requirements for the LCN 9150?

The LCN 9150 requires a minimum head frame depth of 2 inches (51mm) and a minimum top rail depth of 2 inches (51mm). These minimums are required for the mounting bracket (9150-3018) to seat properly. If the head frame is narrower than 2 inches, the standard mounting configuration is not possible and an alternate bracket solution is needed. For flush ceiling installations, 5-1/4 inches of clearance above the door is required.

What Are the Reveal Limits for the LCN 9150 Push Arm?

Push installations must not exceed 6 inches (152mm) of reveal when using the regular arm (9150-3077). For reveals between 6 inches and 9-3/4 inches (248mm), the long arm (9150-3077L) with the long rod and shoe (9150-79LR) is required. These are not guidelines -- exceeding the reveal limit with the wrong arm results in mechanical binding, incorrect door travel, and potential damage to the operator spindle.

What Compliance Standards Does the LCN 9150 Meet?

The LCN 9150 meets the following standards, which are important for facilities managers ordering replacement parts on code-compliant openings:

• ANSI/BHMA A156.19 -- Low-energy power-operated doors
• ANSI A117.1 -- Accessibility requirements
• Americans with Disabilities Act (ADA) compliant
• UL 325 listed
• UL listed for fire-rated applications

When replacing components on a fire-rated opening, confirm that all replacement parts are the same specification as the originals. Do not substitute non-OEM components on fire-rated applications without confirming compliance with the authority having jurisdiction.

How to Identify Your LCN 9150 Before Ordering Parts

The date of manufacture label on the LCN 9150 is on the operator body, typically inside the cover near the control box. It shows the model number (9150 for a paired-door push-side installation), the manufacturing date, and the serial number. Confirm the model number before ordering any replacement component.

If the label is unreadable, identify the operator by the configuration:

• A paired header with an operator on both door leaves, mounted on the push side, is a 9150 installation.
• A single-door installation on the pull side is a 9130.
• A single-door installation on the push side is a 9140.

Parts from the 9130 and 9140 share many part numbers with the 9150 because all three are Benchmark series operators. The motor gearbox, control box, arms, rods, and cover components are common across the three series. Always verify the part number prefix matches your specific model before ordering.

For a broader overview of LCN door operator component categories and what failure looks like in each one, see the door operators parts guide.

What Does Each Potentiometer Do on the LCN 9150 Control Box?

The LCN 9150-3462SC control box has five labeled potentiometers. Each one controls a separate phase of the door cycle. When the door is behaving incorrectly, knowing which potentiometer to adjust avoids unnecessary part replacement.

All five potentiometers are clearly labeled on the 9150-3462SC control box. Adjustment is made with a small flathead screwdriver through the access point on the control box face. Always make small adjustments and test the door cycle before adjusting further. If potentiometer adjustment has no effect on the symptom, the control box needs replacement.

What Does Each LED Mean on the LCN 9150 Control Box?

The 9150-3462SC control box has two LED indicator lights. Understanding exactly what each LED indicates prevents misdiagnosis before ordering replacement parts.

Key diagnostic rule: If the Power LED is on but the Motor LED stays off when an open signal is sent and the door does not move, the fault is in the motor gearbox (9150-3454S) or the AC power cable (9150-3498-2A) connecting it to the control box. If the Power LED is also off, the fault is upstream of the control box in the power supply or circuit.

How Do I Run a Sizing Cycle After Replacing the LCN 9150 Motor Gearbox?

After replacing the motor gearbox (9150-3454S), a sizing cycle must be completed before the operator returns to normal automatic service. The sizing cycle allows the control box to learn the full travel of the door and set the open counter correctly.

During the sizing cycle, the door drives automatically to the full open position. The speed during sizing is controlled automatically by the control box and cannot be adjusted from the potentiometers. Once the door reaches the full open position, the system sets the open counter and the operator is ready for normal use.

If the sizing cycle is skipped after a motor gearbox replacement, the operator will not function correctly and may reverse or stop short of the full open position. The sizing cycle is also required any time the mounting bracket position is changed or the door travel geometry is altered.

What Happens to the LCN 9150 During a Power Failure?

The LCN 9150 Benchmark is designed to function as a manual door closer during a power failure. When power is lost, the motor drive circuit deactivates and the door falls back to spring-powered operation at Size 3 spring force. This allows the door to continue closing under spring power even without electricity, which is critical for fire-rated openings where the door must close and latch on a power interruption.

This behavior means a fire-rated 9150 installation will still protect the opening during a power outage. It also means that during a power outage, if the door is not closing correctly, the fault may be in the spring mechanism rather than the motor or control box. Inspect the spring and arm geometry before ordering electronic components when the symptom occurs during a power outage.

What Is the Minimum Door Width for the LCN 9150?

Confirm the door width before ordering parts to ensure the 9150 is the correct model for the installation.

Does the LCN 9150 Require a Certified Technician to Service?

LCN states that technicians must be AAADM (American Association of Automatic Door Manufacturers) certified to work on or service automatic door operators. AAADM certification is a training and safety standard for professionals who install and service power-operated pedestrian doors.

Facilities managers and building engineers can identify failing components, read the LED indicators, and make basic potentiometer adjustments. However, full disassembly, motor gearbox replacement, and sizing cycle completion should be performed by an AAADM-certified technician to ensure proper operation on fire-rated and ADA-compliant openings. Call 845-935-0301 to discuss part identification before placing an order.

Complete LCN 9150 Parts Reference Table

Where to Order LCN 9150 Parts

Security Parts stocks all 21 LCN 9150 replacement components. Parts ship same day when ordered before the daily cut-off. Call 845-935-0301 for pre-order compatibility support or to confirm a part number before placing an order.

For the broader LCN door operator parts catalog organized by operator series, see the door operators parts guide. For LCN power-assist sliding door operator parts, see the LCN 9530IQ parts guide. For the full Benchmark series parts catalog covering the 9130, 9140, and 9150, see the LCN 9130/9140/9150 Benchmark series page. For all door operator parts and accessories, see the door operators category.

About This Guide

Written by the Security Parts team. Security Parts has supplied commercial door hardware components to facilities managers, building engineers, contractors, and service technicians since 2001. All 21 LCN 9150 parts listed in this guide are verified in stock with same-day shipping on stocked components. Call 845-935-0301 for pre-order identification or compatibility support. For related operator parts guides, see the door operators parts guide and the LCN 9530IQ parts guide.

Quick Answer

Security Parts stocks 39 replacement parts in the Adams Rite 41 series. These components service Adams Rite SVR (surface vertical rod) and CVR (concealed vertical rod) exit devices used on narrow stile glass and aluminum storefront doors. The 41 series covers SVR and CVR final assemblies, rod assemblies, end cap assemblies, escutcheon operators (IP and IB types), paddle assemblies, latch assemblies, bolt guide kits, micro switch assemblies, and rivnut tool kits. All 39 parts are confirmed in stock at Security Parts.

What Is the Adams Rite 41 Series?

The Adams Rite 41 series is the replacement parts numbering family for Adams Rite vertical rod exit devices. Any part number beginning with "41-" belongs to this family and covers the internal mechanical assemblies, trim components, and service tools that keep SVR and CVR exit devices operating correctly.

These parts are most commonly found on narrow stile aluminum storefront doors in commercial retail, office, and educational facilities. The exit device pushes the rods to retract the top and bottom bolts simultaneously when someone presses the push bar or paddle, allowing the door to open. When the mechanism wears or a component fails, the 41 series is where the replacement parts come from.

The 41 series is distinct from the Adams Rite 91 series, which covers trim hardware (lever kits, faceplates, and strikes). If you are looking for trim or handle components, see the Adams Rite parts guide. If you need the full exit device assembly rather than individual replacement parts, see the exit devices category.

What Is the Difference Between SVR and CVR Parts?

Understanding this distinction before ordering is critical. Ordering a CVR part for an SVR device or vice versa results in a part that will not fit the mechanism.

SVR (Surface Vertical Rod)

SVR exit devices mount the vertical rods on the surface of the door, running along the outside face of the stile. The rods are visible when the door is closed and are accessible for inspection and service without disassembly of the door itself. Because SVR rods are exposed, they are more likely to need service over time. Bottom rod drag is one of the most common SVR service issues: the lower rod extends too far and scrapes the floor, scribing an arc in the threshold area. This requires rod adjustment.

CVR (Concealed Vertical Rod)

CVR exit devices run the rods entirely inside the door stile, concealed from view. CVR devices are almost always used on aluminum storefront narrow-stile doors where exposed rods would be impractical or unattractive. Because the rods are hidden inside the door, inspection is more difficult and service requires partial disassembly to access the rod assembly. When diagnosing a CVR problem, inspect the full opening carefully before beginning disassembly, since loose fasteners or debris in the threshold strike can cause symptoms that mimic internal rod failure.

For a full explanation of how SVR and CVR exit devices are installed, see the how to install an exit device guide.

Which Adams Rite Exit Device Series Uses 41-Series Parts?

The 41 series serves multiple Adams Rite exit device families. The correct final assembly part number depends on which exit device series is installed. The table below maps the primary device series to the corresponding 41-series SVR or CVR final assembly:

Always confirm the series number from the label on the installed exit device before ordering a final assembly. The label is typically on the push bar housing or end cap.

Adams Rite 41 Series Parts by Component Category

SVR Final Assemblies

Adams Rite 41-0282-01 SVR Final Assembly with Rods. The primary replacement assembly for 8100 series SVR exit devices. View product page.

When Do I Need the Full SVR Final Assembly Versus the Top Rod Assembly Only?

Order the complete final assembly (41-0282-01 or 41-0235-01) when the full internal mechanism needs replacement -- when the device fails to retract both the top and bottom bolts, or when the overall mechanism is worn or damaged beyond a single component repair.

Order the top rod assembly variant (41-0333-11 or 41-0333-01) when inspection confirms the problem is isolated to the upper rod portion and the lower mechanism is operating correctly. Inspect the device fully before ordering to avoid an unnecessary full-assembly replacement.

CVR Final Assemblies

Adams Rite 41-0675 CVR Final Assembly Complete with Bolts. Used on 8500 and 8600 series CVR exit devices. View product page.

Rod Assembly

End Cap Assemblies

Adams Rite 41-0902-03-IP Metal End Cap Assembly. The IP designation indicates an integrated pull on this end cap. View product page.

What Does IP Mean on an Adams Rite 41 Series Part Number?

IP stands for Integrated Pull. On end cap and escutcheon assemblies, the IP designation means the pull handle is built directly into the assembly. This is the standard configuration for narrow stile glass and aluminum storefront doors where a separate pull handle is not installed. When replacing an end cap or escutcheon on a storefront door, check whether the existing hardware has an integrated pull before ordering -- an assembly without the IP designation will not include the pull.

Latch Assemblies

Adams Rite 41-0296-02 Latch Assembly (RHR), for 3300 series exit devices. Latch assemblies are handed -- confirm the door hand before ordering. View product page.

Latch assemblies are handed. LHR (left hand reverse) and RHR (right hand reverse) are not interchangeable. Determine the door hand before ordering: standing on the outside of the door, facing the door, a right-hand reverse door has the hinges on the right. If uncertain, call Security Parts at 845-935-0301 for pre-order hand verification support.

Escutcheon Assemblies

What Does IB Mean on an Adams Rite 41 Series Part Number?

IB stands for Integrated Bolt. IB escutcheon assemblies are designed for doors where a deadbolt function is integrated into the exit device trim. The IB series includes separate interior and exterior components. Interior escutcheon operators mount on the inside of the door; exterior escutcheons mount on the outside. These are not interchangeable -- ordering the wrong designation results in a part that installs on the wrong side.

Adams Rite 41-0942-01-119 IB Interior Escutcheon Operator, Clear Anodized (finish 119). View product page.

IB Interior Escutcheon Operators (41-0397 and 41-0942 series):

IB Exterior Escutcheons (41-0405 and 41-0943 series):

Paddle Assemblies

What Finish Codes Are Available for Adams Rite 41 Series Paddles and Escutcheons?

Finish codes appear as a three-digit number at the end of the part number. Common codes in the 41 series:

Match the existing hardware finish before ordering. If the existing part number label on the door is unreadable, match visually: satin aluminum is a brushed silver, dark bronze anodized has a warm brown tone, and black is a flat matte finish.

IP Escutcheon Assemblies (Integrated Pull, Non-IB)

The push direction (left or right) refers to the direction the door pushes open from the outside. Confirm the door swing direction before ordering.

Bolt Guide Assembly Kit

Micro Switch Assembly

Rivnut Tool Kits

What Is the Adams Rite Rivnut Tool Kit Used For?

The Adams Rite 41-0975 rivnut tool kit is a specialized service tool for exit device installations where a rivnut anchor point in the door frame or stile has been stripped or damaged. A rivnut is a threaded insert that is pressed into the door to provide a secure mounting point for exit device screws. When an original rivnut spins or strips, the exit device cannot be securely fastened without re-establishing that anchor. The rivnut tool kit allows the technician to install a new rivnut in place of the damaged one.

Two variants are stocked: 41-0975-02 and 41-0975-04. These are specialized tool kits, not hardware parts -- they are reusable installation tools kept in the service kit rather than left in the door.

How to Identify Which Adams Rite 41 Series Part You Need

Follow this order before placing any 41 series parts order:

1. Confirm the exit device series. Locate the label on the push bar housing or end cap. It will show the series number (3100, 8100, 8500, 8600). This determines which final assembly applies.
2. Confirm SVR or CVR. Look at the door. Visible rods on the door surface indicate SVR. No visible rods (rods inside the door stile) indicate CVR.
3. Confirm IP or IB requirement. If replacing an escutcheon or end cap, check whether the existing hardware has an integrated pull (IP) or integrated bolt (IB). These are not interchangeable.
4. Confirm interior or exterior escutcheon. For IB escutcheons, confirm which side of the door the part mounts on before ordering.
5. Confirm door hand for latch assemblies. LHR and RHR latch assemblies are separate parts. Determine hand before ordering.
6. Confirm finish code. For paddles and escutcheons, match the three-digit finish code to the existing hardware.

If you cannot read the model label or finish code, call Security Parts at 845-935-0301 for pre-order identification support.

Troubleshooting Common Adams Rite Vertical Rod Exit Device Problems

Why Is My Adams Rite SVR Bottom Rod Dragging on the Floor?

Bottom rod drag is one of the most common SVR service issues. When the lower rod extends too far, it contacts the threshold or floor and scribes an arc as the door swings. This is not a parts failure in most cases -- it is an adjustment issue. The lower rod needs to be trimmed or repositioned to the correct length for the door height. This adjustment may need to be repeated periodically as the door or frame settles. If the rod is physically bent or damaged, replace the rod assembly (41-0337) or the relevant final assembly.

Why Will the Device Not Dog?

Dogging holds the exit device in the unlatched position so the door can be opened without pressing the push bar. If the device will not dog, check that the hex key is being turned the correct direction (clockwise to dog, counterclockwise to release on most models). Also confirm the push bar is fully depressed and held before turning the key. A worn dogging assembly may also prevent engagement -- this is a 31-series part, not a 41-series part, and is covered separately in the exit devices parts guide.

Why Are the Top or Bottom Bolts Not Retracting?

When only one bolt fails to retract, the problem is usually localized to the rod or latch on that end of the door. For SVR devices, inspect the visible rod and strike for bends, corrosion, or physical damage. For CVR devices, inspect the threshold strike for debris or misalignment before assuming internal rod failure. If the full mechanism fails to retract both bolts, the final assembly may need replacement.

Complete Adams Rite 41 Series Parts Reference Table

Where to Order Adams Rite 41 Series Parts

Security Parts stocks all 39 Adams Rite 41 series replacement components. Parts ship same day when ordered before the daily cut-off. Call 845-935-0301 for pre-order part identification, hand determination, or finish matching support before placing an order.

For Adams Rite trim hardware (lever kits, faceplates, and strikes), see the Adams Rite parts guide. For the broader exit device parts catalog, see the exit devices parts guide. For related vertical rod exit device guidance, see the Von Duprin 9947 CVR exit device parts guide and the Von Duprin 22 series exit device parts guide.

About This Guide

Written by the Security Parts team. Security Parts has supplied commercial door hardware components to locksmiths, glaziers, contractors, and facilities managers since 2001. All 39 Adams Rite 41 series parts listed in this guide are verified in stock with same day shipping on stocked components. Call 845-935-0301 for pre-order identification support. For related exit device parts guides, see the exit devices parts guide and the delayed egress guide.

Quick Answer

Security Parts stocks 33 replacement parts for the LCN 4020T track-arm surface door closer. The key components are the 3077T standard track arm (180-degree swing), four 3038-family tracks (standard, hold-open, bumper, and hold-open plus bumper), the 3034 and 3034H track rollers, the 18 drop plate for narrow head frames, and 10 screw pack variants covering all substrates and thru-bolt configurations. The 4020T cylinder is available in spring sizes 1, 3, and 4 based on door width. All 33 parts are confirmed in stock.

What Is the LCN 4020T?

The LCN 4020T is the track-arm (parallel arm) configuration of the LCN 4020 surface-mounted commercial door closer. Instead of connecting from the closer body to a shoe on the door frame, the 4020T uses a horizontal track mounted on the door surface. The arm extends from the closer spindle and slides inside that track to control the door arc on every cycle.

The track-arm configuration suits doors that swing toward the closer (the same side the closer body is mounted on), and it is preferred when a parallel-arm layout is needed for clearance, aesthetics, or ADA compliance. The 4020T can be ordered with an opening force of less than 5.0 lbs on a 36-inch door, making it suitable for ADA-compliant installations.

How Do I Know If I Have a 4020T or a Standard 4020?

Look at the door surface when the door is open. If you see a horizontal track channel mounted across the door with an arm sliding inside it, you have the 4020T. If there is only a straight arm going from the closer body to a shoe on the frame or soffit, you have the standard 4020 and need different parts.

The closer body label also identifies the model. The label is on the underside or end of the closer body and will show 4020T as the series. For a full family comparison, see the LCN 4000 series parts guide.

What Spring Size Does the LCN 4020T Come In?

The LCN 4020T cylinder is available in three spring sizes: 1, 3, and 4. Spring size is selected based on door width. The LCN size selection table maps door widths to recommended sizes:

The spring size is stamped or labeled on the closer body. Confirm the size before ordering a replacement cylinder or screw pack, since some fastener packs are size-specific.

What Clearance Does the LCN 4020T Need Behind the Door?

The LCN 4020T requires a minimum of 1-1/2 inches (38mm) of clearance between the back of the door and the wall or any obstruction for 90-degree or 180-degree swing. If the door cannot open to that clearance, the track arm will bind or the arm will not reach its maximum rotation. Measure this before installing a new track or replacing an arm to confirm the door geometry supports the intended swing angle.

LCN also recommends ANSI/SDI-100 reinforcing for hollow metal doors at the closer and track mounting locations. This is a practical note for contractors: without proper reinforcing, hollow metal doors can pull or deform at the fastener locations under repeated closer cycling, causing misalignment over time.

LCN 4020T Parts by Component Category

Track Arm

LCN 4020T-3077T Standard Track Arm, 180-Degree Swing. The primary arm component for the 4020T. View product page.

The arm is handed, meaning left-hand and right-hand versions are different parts. Before ordering, confirm the hand of your door: standing in the opening looking toward the outside, a right-hand door has the hinges on the right. The arm screw (4020T-159) that fastens the arm to the closer spindle should be replaced whenever the arm is replaced, since stripped arm screws are a common cause of arm looseness.

Tracks

LCN 4020T-3038HB Standard Track with Bumper and Hold-Open. View product page.

All four track variants are non-handed, meaning the same track fits left-hand and right-hand doors. Finish must be specified when ordering (indicated by (F) in the LCN parts list).

Important: The track bumper assembly (4020T-169) is designed to assist backcheck and limit the maximum door opening swing. It does not replace an auxiliary stop. If the door is swinging hard against a wall or surface, an auxiliary wall or floor stop should also be installed.

Track Rollers

LCN 4020T-3034H Hold-Open Track Roller. Required when the installed track is a hold-open variant. View product page.

The LCN 4020T roller is a quiet, low-friction assembly with a shoulder dimension of 1/16 inch (2mm). The standard (3034) and hold-open (3034H) rollers have different profiles and are not interchangeable. Using a standard roller in a hold-open track will prevent the door from latching open at the hold-open point.

Hold-Open Components

Drop Plate

Covers, Caps, and Hardware

LCN 4020T-72 Standard Cover. Handed part -- specify finish and hand when ordering. View product page.

Screw Packs

The LCN 4020T ships standard with a Self-Reaming and Tapping (SRT) screw pack containing Phillips head screws. Ten screw pack variants cover all mounting substrates, thru-bolt requirements, and hold-open track configurations.

Standard LCN thru-bolts install on 1-3/4 inch (44mm) thick doors with 1/4-20 machine screws. Optional thru-bolt sizes for 1-5/8 inch (41mm) or 1-3/8 inch (35mm) door thickness must be specified when ordering.

Troubleshooting: Why Is My LCN 4020T Not Working Properly?

Why Is My LCN 4020T Door Not Closing?

If the door is not closing fully, check the following in order:

• Check the closing speed valve. Turn all regulating valves clockwise until they stop, then open each valve 1-1/2 turns as a starting point. Closing speed is typically the main valve.
• Inspect the roller and track. A worn roller that skips in the track can prevent the closer from pulling the door shut.
• Check the spring size. If the spring is underrated for the door weight or width, the door will not close against wind pressure or door seal resistance.
• Verify the arm is not bent. A bent 3077T arm sits the door at an angle that may cause the latch to miss the strike.

Why Is My LCN 4020T Arm Clicking or Squeaking?

Clicking, squeaking, or grinding as the door swings is almost always a worn track roller. The roller runs inside the track channel on every cycle and is the highest-wear component in the system. Replace the 3034 (standard) or 3034H (hold-open) roller first. If the noise continues after roller replacement, the track channel interior may be scored or grooved and the track itself should be replaced.

Should I Rebuild or Replace My LCN 4020T?

In most field situations, replacing individual components is the correct approach rather than replacing the full closer. A new LCN 4020T closer costs several hundred dollars. If the symptoms are a worn roller, a bent arm, or a damaged track, replacing only those parts is the practical solution.

Full closer replacement makes more sense when the closer body itself is leaking hydraulic fluid at the pinion or end cap, when the spring is broken internally, or when the closer has sustained physical damage to the housing. The hydraulic fluid in an LCN closer must not be refilled in the field; if the body is leaking, the closer needs to be replaced.

How Do I Install the LCN 4020T Arm and Track Roller?

The LCN 4020T installation sequence from the official instructions is as follows:

1. Assemble the roller into the track channel before mounting the track to the door.
2. Attach the arm to the closer spindle at the pre-load position (15 degrees from the door face). Secure with the arm screw (4020T-159).
3. Open the door approximately 30 degrees, pull the arm over the top of the door, and connect the arm to the track roller as shown in the installation template.
4. Adjust the closer as needed for closing speed, latch speed, and backcheck.

For step-by-step adjustment guidance, see the how to adjust a commercial door closer guide. For full installation guidance, see the how to install a commercial door closer guide.

How to Specify LCN 4020T Parts: Finish and Hand Requirements

Several LCN 4020T parts require finish and hand to be specified at order time. The LCN parts list marks these with (F) for finish and (H) for hand:

• Finish (F): The cover (72, 72MC), end caps (73), and plugs (141-2) require a finish specified at order. Common LCN finishes include 689 (aluminum), 690 (dark bronze), 693 (black), and others. Match the existing closer finish when ordering replacement covers.
• Hand (H): The arm (3077T) and covers (72, 72MC) are handed. Specify LH (left hand) or RH (right hand) to match the door. Standing in the opening and looking toward the outside: hinges on the right = right-hand door.
• Tracks and rollers: Non-handed. The same track and roller fit both left-hand and right-hand doors.

LCN 4020T vs 4010T vs 4020: Which Parts Are Shared?

For LCN 4010T parts, see the LCN 4010T parts guide. For the full family comparison, see the LCN 4000 series guide.

Complete LCN 4020T Parts Reference Table

Where to Order LCN 4020T Parts

Security Parts stocks all 33 LCN 4020T replacement components verified in stock and ready to ship. Call 845-935-0301 for pre-order compatibility support or to confirm a part number, finish, hand, or spring size before placing an order. For the broader LCN closer parts catalog, see the door closers parts guide. For help selecting the right LCN closer or spring size for a new opening, see the LCN commercial door closer selection guide and the commercial door closer sizing guide. For related LCN track-arm closer parts, see the LCN 4050AT parts guide and the LCN 4040XP parts guide.

About This Guide

Written by the Security Parts team. Security Parts has supplied commercial door hardware parts to locksmiths, general contractors, facilities managers, and security integrators since 2001. All 33 LCN 4020T parts listed in this guide are verified in stock with same-day shipping on stocked components. Call 845-935-0301 for pre-order compatibility support. For related LCN closer guides, see the LCN 4000 series parts guide and the LCN 4840 parts guide.

Quick Answer

An exit alarm is a commercial door hardware device that sounds an audible alarm the moment a door is opened, without delaying or holding the door closed. It is used on secondary egress doors, utility exits, and service doors where unauthorized or casual use needs to be monitored but where immediate free egress is still required. The door opens freely when pushed. The alarm sounds immediately and continues until the door closes or is manually reset.

Exit alarms are a different product category from panic hardware and from delayed egress devices. Understanding the difference matters before specifying or replacing hardware on a commercial door.

What Is an Exit Alarm

Detex EAX-2500S Surface Mount Exit Alarm. Installed on secondary egress and utility doors that require alarm monitoring without a delay. View product page.

An exit alarm is a locking and alarm assembly mounted on a commercial door. When someone pushes the door open, two things happen simultaneously: the door opens freely and an audible alarm sounds. There is no delay before the door releases. The alarm continues until the door closes and latches, or until an authorized person resets it with a key.

The primary purpose of an exit alarm is monitoring, not restriction. The device does not prevent a person from leaving. It creates an immediate audible alert that the door has been used, which allows staff or security personnel to respond. This makes exit alarms appropriate for doors where controlling casual or unauthorized access is the goal, rather than doors where panic hardware or delayed egress is required by code.

Exit alarm devices are most commonly installed on secondary egress doors, storeroom exits, loading dock doors, utility access doors, and service entrances in commercial buildings. They allow the building to maintain a primary egress path with proper panic hardware or fire exit hardware while monitoring secondary openings that see less regular traffic.

For a broader overview of exit device types and component categories, see the exit devices parts guide.

How an Exit Alarm Works

The sequence of events when an exit alarm door is opened is straightforward:

• Door contact: A person pushes the door open. The door opens freely with no resistance beyond normal door weight and closer spring.
• Immediate alarm: The alarm sounds within one second of the door opening. There is no grace period or delay before the alarm activates on a standard exit alarm device.
• Continuous alarm: The alarm continues for as long as the door remains open, or until a key reset is performed.
• Automatic reset: On most models, closing the door to the latched position stops the alarm and resets the device for the next use. Some models require a key reset by authorized staff.

The latch mechanism on an exit alarm device holds the door in the closed and latched position during normal operation. When the door is opened, the latch retracts and the alarm circuit activates. The alarm is integral to the device, typically a piezoelectric buzzer or speaker built into the device housing, producing a loud audible tone that can be heard from adjacent rooms or corridors.

Some exit alarm models also include a remote alarm output, allowing the alarm signal to be sent to a building management system, security panel, or remote annunciator. The Detex RLY24 and RLY12 relay kits are available for connecting exit alarm devices to remote monitoring systems, as covered in the wiring section below.

Exit Alarm vs Delayed Egress: Key Differences

Exit alarms and delayed egress devices are two distinct product categories that are sometimes confused because both include an alarm function. The differences are significant for specification and code compliance.

A delayed egress device holds the door locked for a code-permitted time period before releasing it automatically. An exit alarm releases the door immediately with no hold period. These devices are not interchangeable. If your project specifies delayed egress hardware, an exit alarm does not satisfy that requirement. For a full explanation of how delayed egress works and when it is required, see what is delayed egress.

Exit Alarm vs Panic Hardware: Key Differences

Panic hardware and exit alarms are also distinct products that serve different functions. They are sometimes found on different doors in the same building, and understanding which applies to which opening is important for specification and code compliance.

Panic hardware is a latch-releasing assembly that allows single-motion egress without a key and without sounding an alarm. It is required by both NFPA 101 and the IBC on egress doors serving assembly and educational occupancies with occupant loads of 50 or more, and on certain high-hazard occupancies. Standard panic hardware does not include an alarm function. It simply allows fast egress.

An exit alarm is a monitoring device. When the door opens, the alarm sounds. The exit alarm does not satisfy code requirements for panic hardware applications. You cannot substitute an exit alarm for code-required panic hardware.

In practice, a commercial building may have both: primary egress doors with panic hardware or fire exit hardware meeting code requirements, and secondary utility or service doors with exit alarm devices to monitor unauthorized use. The two product types serve different door types and different purposes within the same facility.

For a full explanation of panic hardware, exit device types, and code requirements, see the panic hardware for commercial doors guide and the exit device vs panic bar comparison guide.

Types of Exit Alarm Devices

Detex EAX-4200SK Surface Mount Exit Alarm Door Prop Alarm Kit. Sounds when the door opens and continues if the door is propped open beyond the set time. View product page.

Exit alarm devices are available in several configurations. The right type depends on the door construction, mounting requirements, and whether door prop monitoring is needed.

Surface Mount Exit Alarm

A surface mount exit alarm attaches to the surface of the door and frame without requiring a door cutout or internal routing. The device chassis mounts on the door face and the strike or magnetic sensor mounts on the frame. Surface mount models are the most common choice for retrofit installations on existing doors because they do not require modification to the door itself.

The Detex EAX-2500S and EAX-2500SK are surface mount exit alarm units available as standalone devices and as complete kits including all required hardware for installation.

Flush Mount Exit Alarm

A flush mount exit alarm is recessed into a cutout in the door, resulting in a lower-profile installation where the device housing sits flush with the door surface rather than projecting outward. Flush mount models require door preparation and are more common in new construction or door replacement projects where the door can be prepared at the factory.

The Detex EAX-2500F and EAX-2500FK are flush mount exit alarm units for doors prepared for recessed installation.

Door Prop Alarm

A door prop alarm adds a timed threshold to the standard alarm function. The device does not sound immediately when the door opens. Instead, it allows a brief legitimate opening window (commonly 15 or 30 seconds) before the alarm activates. If the door closes within that window, no alarm sounds. If the door remains propped open past the threshold, the alarm activates.

Door prop alarms are useful on service doors and loading dock entrances where brief legitimate openings are routine but extended propping creates a security or energy problem. The Detex EAX-4200SK and EAX-3500SK include door prop alarm functionality with timed bypass capability.

Timed Bypass Exit Alarm

Some exit alarm models include a timed bypass function that allows authorized users to temporarily suppress the alarm for a set period. This is useful on high-traffic service doors during specific scheduled hours. The bypass is activated by an authorized key and expires automatically after the programmed time, restoring normal alarm operation without requiring staff to manually re-arm the device.

For a complete catalog of exit alarm parts and kits organized by product line, see the exit alarm parts and diagrams page.

Wiring and Power Options

Detex RLY24 24VAC Relay Kit for remote bypass on exit alarm systems. Allows the alarm output to be connected to a remote panel or monitoring system. View product page.

Exit alarm devices are available in battery-powered and hardwired configurations. The right choice depends on the availability of power at the door location and the monitoring requirements of the facility.

Battery-Powered Exit Alarms

Battery-powered exit alarm devices operate independently of building power and require no wiring beyond the device itself. They are the easiest to install on existing doors where running conduit or wire to the door location is impractical. Battery life depends on usage frequency and the specific model. Battery replacement is part of the maintenance schedule for battery-powered devices.

Battery-powered exit alarms are a common choice for retrofit installations on secondary doors in existing buildings where no low-voltage wiring is present at the door.

Hardwired Exit Alarms

Hardwired exit alarm devices connect to a low-voltage power supply in the building. Hardwired models are more suitable for new construction or for facilities where consistent power monitoring and integration with a building management system are required. Hardwired devices eliminate the need for periodic battery replacement and allow continuous power monitoring.

Remote Alarm Output and Relay Kits

Many exit alarm models support a remote alarm output connection, allowing the device to send an alarm signal to a remote panel, security system, or annunciator when triggered. The Detex RLY24 (24VAC) and RLY12 (12VAC) relay kits are available for connecting exit alarm devices to remote monitoring systems. The relay kit installs between the exit alarm device and the remote panel and passes the alarm signal through when the door is opened.

Remote monitoring integration is useful in facilities where security staff monitor multiple exits from a central location and need audible or visual notification when any monitored door opens. For a broader overview of access control integration with commercial door hardware, see the access control and commercial door hardware integration guide.

Required Exit Alarm Signage

Detex 102651-2 English/German Exit Alarm Door Sign. Code-compliant signage for exit alarm installations. Available in multiple languages. View product page.

Exit alarm doors require posted signage that alerts anyone approaching the door that opening it will trigger an alarm. The sign must be visible to a person approaching the door from the egress side before they push it open.

The specific code requirements for exit alarm signage vary by jurisdiction and the applicable code edition adopted locally. Consult the authority having jurisdiction (AHJ) for the sign format and placement requirements that apply to your project.

Security Parts stocks exit alarm door signs in multiple languages to meet the requirements of facilities serving multilingual populations or operating in jurisdictions with specific language requirements:

• English/German: Detex 102651-2
• Chinese (Simplified): Detex 102651-3
• Chinese (Traditional): Detex 102651-4
• French: Detex 102651-1
• Spanish: Detex EA-704-2
• German: Detex EA-561G
• French-Canadian: Detex EA-705

Signage is a required component of a compliant exit alarm installation, not an optional accessory. An exit alarm installation without the required posted sign may fail inspection even if the device itself is functioning correctly.

Where Exit Alarms Are Used: Building Type Applications

Exit alarms are appropriate across a wide range of commercial building types wherever secondary door monitoring is needed without the complexity of panic hardware or delayed egress devices.

For application-specific door hardware guidance, see the healthcare door hardware guide, the K-12 school door hardware guide, and the government buildings door hardware guide.

How to Choose the Right Exit Alarm

Selecting the right exit alarm configuration requires answers to five questions before ordering.

1. Is this a new installation or a retrofit?

New construction or door replacement allows for flush mount installation with the door prepared at the factory. Retrofit on an existing door typically requires a surface mount device to avoid door modification. Surface mount models (EAX-2500S, EAX-4200SK) work on most standard commercial doors without cutting or routing.

2. Is power available at the door?

If low-voltage wiring runs to the door location, a hardwired model is appropriate and eliminates battery maintenance. If no wiring is present, a battery-powered model provides a simpler retrofit installation. Confirm the power supply voltage matches the device requirements before ordering hardwired models.

3. Is door prop monitoring required?

If the concern is doors being held open for extended periods rather than brief openings, a door prop alarm model (EAX-4200SK, EAX-3500SK) is more appropriate than a standard exit alarm that sounds on every opening. Door prop alarms allow brief legitimate openings without triggering the alarm.

4. Is remote monitoring required?

If security staff need to be notified at a central location when a specific exit alarm door opens, a relay kit (RLY24 or RLY12) connects the alarm output to a remote panel or annunciator. Confirm the relay voltage matches the power supply before ordering.

5. What signage is required?

Confirm the required sign language and format with the AHJ before ordering. Security Parts stocks exit alarm door signs in seven language options. Order the sign as part of the installation rather than as a follow-up item to avoid an inspection issue on the first visit.

Exit Alarm Parts and Replacement Components

Exit alarm devices require periodic maintenance and occasional parts replacement. The most commonly replaced components are the battery (on battery-powered models), the door sign, and the latch or magnetic sensor assembly if damaged or worn.

When ordering replacement parts, identify the model number from the label on the installed device before contacting Security Parts. The model number determines which components are compatible. Security Parts stocks exit alarm parts and complete exit alarm kits across the Detex EAX series, including:

• Complete surface mount exit alarm units (EAX-2500S, EAX-4200SK, EAX-3500SK)
• Complete flush mount exit alarm units (EAX-2500F, EAX-3500FK)
• Complete exit alarm kits with all installation hardware (EAX-2500SK, EAX-2500FK, EAX-4200SK, EAX-3500SK, EAX-3500FK)
• Retrofit conversion kit for converting older EAX-2500F units (Detex 102640)
• Relay kits for remote alarm output (RLY24 for 24VAC, RLY12 for 12VAC)
• Exit alarm door signs in English/German, Chinese, French, Spanish, German, and French-Canadian
• Junction box with relay (JB-R)
• Slide-in filler kit for hardwired electric alarm installations (SIFV-EA)

For the complete exit alarm parts catalog, see the exit alarm parts and diagrams page. For troubleshooting an exit alarm that is not functioning correctly after installation, see the commercial door hardware troubleshooting guide. Call 845-935-0301 for pre-order compatibility support.

About the Author

This guide was written by the Security Parts team, a commercial door hardware specialist serving locksmiths, facilities managers, general contractors, and security integrators since 2001. Security Parts stocks exit alarm devices and replacement parts across the Detex EAX product line, with same-day shipping on stocked components. For related guidance, see the exit device vs panic bar guide, the delayed egress guide, and the Detex ECL parts guide.

Quick Answer

In everyday commercial door hardware practice, "exit device," "panic bar," and "panic hardware" are commonly used to refer to the same category of hardware. These are door-mounted assemblies with a horizontal push element that releases a latch when pressed, allowing fast single-motion egress. The terms originate from different codes and professional contexts, which is why buyers encounter all three in specifications, purchase orders, and field conversations.

That said, terminology matters in two specific situations: when comparing standard panic hardware to fire exit hardware on a fire-rated door assembly, and when reading code requirements that use one term but not another. This guide explains how the terms are used in practice, where the important distinctions lie, and how to confirm which device type applies to your opening.

Where the Terms Come From

The three terms most buyers encounter are "panic hardware," "exit device," and "panic bar." Each comes from a different context.

"Panic hardware" is the term used in NFPA 101, the Life Safety Code. NFPA 101 defines panic hardware as a latching device that allows the door to open from the egress side by applying force to a bar or panel extending at least half the door width, not requiring the use of a key, special knowledge, or effort to operate.

"Exit device" is the term used in the International Building Code (IBC). The IBC references exit devices in its egress requirements, describing devices that allow doors to be opened from the egress side without a key, special tool, or prior knowledge.

"Panic bar" is an informal industry shorthand that refers to the horizontal push bar or crossbar that is the most visible component of the device. In field use, "panic bar" is widely used to refer to the complete exit device assembly, not just the bar component. You will encounter all three terms used interchangeably in specifications, purchase orders, and product catalogs.

For most commercial door hardware decisions, the key understanding is this: whether the project documents say "panic hardware" or "exit device," they are generally describing the same product category. The applicable code for your jurisdiction and the fire rating status of the door determine the specific device requirements.

What Is an Exit Device

Von Duprin 98/99EO Rim Exit Device, Exit Only. A standard panic hardware device for non-fire-rated commercial egress doors. View product page.

An exit device is a complete door hardware assembly designed to allow fast, one-motion egress from a building or area. The device is mounted on the door and consists of a push element (bar, crossbar, or touch pad), an internal latch mechanism, and a chassis that transmits the push motion to the latch. When a person presses the bar, the latch retracts and the door opens. No key, prior knowledge, or special effort is required.

Exit devices are used on commercial egress doors in office buildings, schools, healthcare facilities, retail spaces, government buildings, and any other occupancy type where egress hardware is required to meet life safety codes. The device category includes rim exit devices, surface vertical rod (SVR) devices, concealed vertical rod (CVR) devices, and mortise exit devices. Each type suits different door construction and frame conditions.

For a full explanation of exit device parts and component categories, see the exit devices parts guide and the commercial exit device parts guide.

What Is a Panic Bar

A panic bar is a common informal name for the horizontal bar or crossbar element that extends across the door on an exit device. When someone says "panic bar," they may mean the complete exit device assembly, or they may specifically mean the push bar component that the occupant presses to open the door.

In product catalogs, the push bar is listed as a component: for example, a push bar assembly for a narrow stile exit device is a separate orderable part that replaces the bar element while keeping the existing chassis and mechanism in place. In field conversation and specifications, "panic bar" almost always refers to the complete exit device assembly.

The push element of an exit device is not always a bar. Some devices use a touchpad or push pad rather than a full crossbar. Regardless of push element style, the device functions on the same principle: one-motion egress without a key.

Exit Device Types by Mounting Configuration

Adams Rite 8099 Push Bar Assembly for narrow stile door applications. View product page.

Exit devices are grouped by how they mount to the door and frame and how many latch points they engage. Choosing the right type depends on the door construction, frame material, and project requirements.

Rim Exit Device

A rim exit device mounts on the surface of the door and engages a frame-mounted strike through a single latch point. The chassis attaches to the door face and the latch projects into the strike on the door frame. Rim devices are the most common type and suit most standard commercial steel door and frame applications. They are available in standard panic hardware and fire exit hardware configurations.

Surface Vertical Rod (SVR) Exit Device

An SVR exit device uses external rods that run vertically on the door surface from the device chassis to top and bottom latches. When the bar is pressed, all latch points retract simultaneously. SVR devices suit wide or heavy doors where additional latch points improve security and door stability. The external rods are visible on the door surface.

Concealed Vertical Rod (CVR) Exit Device

A CVR exit device uses internal rods concealed within the door itself, running from the device chassis to top and bottom latches in the door edge. CVR devices require a door prepared with internal rod pockets. They provide a cleaner appearance than SVR devices because the hardware is not visible on the door surface. CVR devices are common in high-end or aesthetic applications where surface hardware is undesirable.

Mortise Exit Device

A mortise exit device integrates with a mortise lock body that is recessed into the door stile. The panic bar retracts the mortise latch when pressed. Mortise exit devices are used on thicker doors and in applications where the additional trim and function options of a mortise lock body are required. They are less common than rim or vertical rod devices in standard commercial applications.

For guidance on how to install an exit device in rim, SVR, or CVR configuration, see the exit device installation guide.

Panic Hardware vs Fire Exit Hardware: An Important Distinction

Von Duprin 98/99EO-F Rim Fire Exit Device. Fire exit hardware listed for fire-rated door assemblies. Note the fire label on the device. View product page.

One area where the terminology matters more precisely is the distinction between standard panic hardware and fire exit hardware. These two device types look similar and operate on the same push-to-exit principle, but they serve different applications and carry different code and listing requirements.

Standard Panic Hardware

Standard panic hardware meets the egress hardware requirements of NFPA 101 and the IBC for non-fire-rated doors. It allows single-motion egress without a key and meets the grade and force requirements of ANSI/BHMA A156.3. Standard panic hardware may include a dogging feature that holds the latch retracted, allowing the door to operate as a push-pull door without pressing the bar each time.

Fire Exit Hardware

Fire exit hardware is required on fire-rated door assemblies. A fire-rated door assembly is a door, frame, and hardware combination that has been tested and listed for a specific fire rating (such as 20-minute, 45-minute, 90-minute, or 3-hour). When a fire-rated door requires egress hardware, the hardware must be listed as fire exit hardware to maintain the door's fire rating.

Fire exit hardware carries a fire label issued by a nationally recognized testing laboratory. The device itself must not allow dogging (holding the latch open), because a fire door must be self-latching to contain fire and smoke. This is one of the most important field distinctions: a standard panic hardware device with a dogging feature should not be installed on a fire-rated door in most jurisdictions.

Visually, the device types look nearly identical. The fire label on the device and the order model suffix (typically an "F" designation, such as "EO-F" rather than "EO") are the distinguishing identifiers. If you are replacing hardware on a fire-rated door, confirm that the replacement device carries the correct fire listing.

For a full explanation of fire door ratings and hardware requirements, see the commercial door fire rating guide.

Summary Comparison

When Is Panic Hardware Required by Code

Both the IBC and NFPA 101 define conditions under which panic hardware or exit devices are required on egress doors. The specific thresholds and occupancy types vary between code editions and are subject to local adoption and amendment. The following is a general summary for context, not a substitute for verifying the applicable code edition and authority having jurisdiction (AHJ) for a specific project.

Under both codes, panic hardware is generally required when an egress door serves an assembly occupancy or an educational occupancy with an occupant load of 50 or more persons. High-hazard occupancies typically require panic hardware regardless of occupant load. The applicable code for your jurisdiction determines the exact threshold and occupancy classifications.

When panic hardware is not code-required, exit devices are still often used on commercial egress doors because they provide convenient, fast egress and are well-suited for high-traffic openings. Code requirement and product choice are two separate decisions: the code determines whether panic hardware is mandatory; the opening conditions determine the best device type when hardware selection is otherwise discretionary.

For a more detailed breakdown of panic hardware code requirements and installation conditions, see the panic hardware for commercial doors guide. For ANSI/BHMA grading and standards that govern exit device performance requirements, see the ANSI BHMA hardware standards guide.

Exit Device Mounting Configurations and Strike Hardware

Adams Rite 22-0430 Strike for Rim Exit Device. The strike mounts on the door frame and receives the rim exit device latch when the door closes. View product page.

An exit device does not operate alone. The device mounted on the door requires a corresponding component on the door frame to complete the latch engagement. For rim devices, this is a rim strike mounted on the frame or mullion. For vertical rod devices, the top and bottom latches engage in floor and head frame strikes. Matching the correct strike to the device series and configuration is part of the parts ordering process.

Strikes are series-specific. A rim strike for one manufacturer's exit device series may not be compatible with a different series, even if the dimensions appear similar. Always verify the strike model against the device series when ordering replacement hardware.

For access control integration, exit devices can be electrified through electric latch retraction (EL) or connected to an electric strike. The choice between electrifying the device itself versus using an electric strike depends on the security requirements and the control logic of the access control system. For a full explanation of these options, see the access control and commercial door hardware integration guide.

Push Element Options: Bar, Touchbar, and Push Pad

Exit devices do not all use the same style of push element. The horizontal bar is the most common and widely recognized, but buyers will also encounter touchbar and push pad configurations.

Crossbar or Push Bar

The traditional crossbar extends across the full width of the door or at least half the door width as required by code. The bar is the most recognizable style and is used across nearly all device types. Push bars are replaceable components: the bar can be ordered separately to replace a damaged or worn push element without replacing the full device.

Touchbar

A touchbar is a slimmer, low-profile push element that is activated by a lighter touch. Touchbars are used where a sleeker appearance is preferred or where the reduced protrusion into the opening is an advantage. Some exit devices are designed specifically for touchbar configurations.

Push Pad

A push pad is a wider, flat panel that replaces the crossbar. Push pads are used on narrow stile aluminum doors and glass storefront applications where the door stile width does not accommodate a traditional crossbar assembly. The Adams Rite 8099 series is a common example of a narrow stile exit device that uses a push bar assembly sized for aluminum door stiles.

How to Identify Which Device Type You Have

Before ordering any replacement parts or a replacement device, confirm the model number of the installed unit. The model number is printed on a label affixed to the device chassis, typically on the side or back of the housing where it is visible when the door is open. The frame strike or the door edge may also carry a label.

Once you have the model number, confirm:

• Whether the device is standard panic hardware or fire exit hardware (check for the fire label)
• The mounting configuration (rim, SVR, CVR, or mortise)
• The push element style (crossbar, touchbar, or push pad)
• The outside trim configuration, if any (keylock, cylinder, thumbturn, or exit only)
• The electrification option, if applicable (EL, QEL, MEL, or standard non-electrified)

These five data points determine the exact parts needed for any repair or replacement. Security Parts stocks exit device parts across multiple series and configurations. For part identification guidance organized by component category, see the exit devices parts guide.

Exit Devices by Building Type

Exit device type and configuration vary by building type, door construction, and code requirements. The following table summarizes common applications.

For application-specific guidance, see the healthcare door hardware guide, the K-12 school door hardware guide, and the government buildings door hardware guide. For delayed egress exit control lock requirements, see what is delayed egress.

Sourcing Exit Device Parts

Security Parts stocks exit device parts across Von Duprin, Falcon, Adams Rite, and Detex product lines. Replacement parts include push bar assemblies, latch assemblies, chassis components, outside trim kits, strike kits, glass bead kits, electrification modules, and dogging hardware.

Parts are series-specific. A Von Duprin 98/99 series push bar assembly is not interchangeable with a Falcon series push bar, even if the devices appear similar from the front. Confirm the device series and model number before ordering. Call 845-935-0301 for pre-order compatibility support if you are uncertain which parts match your installed device.

For the full Von Duprin 98/99 series parts catalog, see the Von Duprin 98/99 series exit device parts guide. For Detex exit control lock parts, see the Detex ECL parts guide. For troubleshooting a device that is not latching, binding, or operating correctly, see the commercial door hardware troubleshooting guide.

About the Author

This guide was written by the Security Parts team, a commercial door hardware specialist serving locksmiths, facilities managers, general contractors, and security integrators since 2001. Security Parts stocks exit device parts across Von Duprin, Falcon, Adams Rite, and Detex product lines, with same-day shipping on stocked components. For related guidance, see the panic hardware for commercial doors guide and the commercial door fire rating guide.

Quick Answer

Delayed egress is a code-permitted door locking system that holds a door locked for a short timed period after someone pushes the exit touchbar. The device triggers a loud audible alarm when touched, then automatically releases the latch and allows free exit after 15 or 30 seconds, depending on the code and occupancy type. It is not a means of preventing egress permanently. It is a life safety compromise that gives facilities time to respond to an unauthorized or unassisted exit attempt while still guaranteeing egress within the code-permitted window.

Delayed egress is most commonly found in memory care units, dementia wards, schools, government buildings, and certain healthcare facilities. It is governed by NFPA 101 Section 7.2.1.6 and IBC Section 1010.1.9.8. All delayed egress devices must release immediately when the fire alarm activates or when power is lost.

How a Delayed Egress Device Works

A delayed egress device looks similar to a standard exit device: a horizontal touchbar or push plate mounted across the door, connected to a latch mechanism that releases when pressed. The critical difference is the internal timing mechanism and alarm circuit.

Here is the sequence of events when someone pushes a delayed egress door:

• Touchbar contact: The person presses the touchbar or push plate. The door does not open immediately.
• Alarm activation: Within one second of touchbar contact, a built-in alarm sounds at the door. The alarm is loud enough to alert staff in an adjacent area. Some models also send a signal to a remote annunciator panel.
• Delay period: The door remains locked during the delay period. Under NFPA 101, the maximum permitted delay is 15 seconds. Under the IBC in jurisdictions that permit an extended delay, the maximum is 30 seconds for approved occupancy types.
• Automatic release: After the delay period expires, the latch retracts automatically and the door opens freely. The person does not need to maintain pressure on the touchbar throughout the delay. A single push is sufficient to start the timing sequence.
• Reset: When the door returns to the closed position, the device resets automatically to the locked state, ready for the next cycle.

The device must be powered, typically by 24VDC from the building's security or access control power supply. When power is removed, the device defaults to free egress with no delay (fail-safe). When the fire alarm activates, the device receives a release signal from the fire alarm panel and immediately retracts the latch, bypassing the delay entirely.

NFPA 101 Section 7.2.1.6: Plain-Language Explanation

NFPA 101, the Life Safety Code, is the primary code governing delayed egress in the United States. Section 7.2.1.6 sets the conditions under which a delayed egress locking system is permitted.

In plain terms, the code says the following:

• The delayed egress system is only permitted where the building is protected throughout by an approved automatic fire suppression system or an approved automatic fire detection system.
• The maximum delay is 15 seconds from the time the touchbar is pressed until the door releases.
• The device must sound an audible alarm at the door when the touchbar is pressed.
• The device must release immediately when the fire alarm system activates anywhere in the building, not just in the zone where the door is located.
• The device must release immediately when power to the device is lost.
• The door must be provided with a readily visible posted sign that tells users the alarm will sound and the door will open after the delay period. This sign is not optional.
• Only one such device may be installed on any egress path, meaning a person cannot be required to pass through more than one delayed egress door before reaching a public way or area of refuge.

The specific occupancy chapters of NFPA 101 also affect where delayed egress is permitted. The general rule in Section 7.2.1.6 permits delayed egress in specific occupancy types. The AHJ has authority to approve or deny the installation based on the occupancy classification and the building's fire protection systems.

IBC Section 1010.1.9.8: Plain-Language Explanation

The International Building Code (IBC), adopted in most US jurisdictions, addresses delayed egress in Section 1010.1.9.8. The IBC provisions are largely consistent with NFPA 101 but include one significant difference: the permitted delay can extend to 30 seconds in specific occupancy types when approved by the AHJ.

In plain terms, the IBC says the following:

• Delayed egress is permitted only where the building is equipped throughout with an automatic sprinkler system or an approved fire detection system.
• The locking system must release when a signal is received from the sprinkler system, the fire detection system, or a manual fire alarm initiation device.
• The system must release upon loss of power controlling the lock.
• The required signage must be posted on the door at an approved location and in an approved format.
• A 15-second delay applies by default. A 30-second delay is permitted for Group I-1 (assisted living, residential care), Group I-2 (hospitals, nursing facilities), Group I-3 (detention and correctional facilities), and Group R-1 (hotels) occupancies when specifically approved by the AHJ.
• Only one delayed egress device may be encountered on any single egress path to the public way.

The 15-Second vs 30-Second Delayed Egress Rule

The distinction between a 15-second and 30-second delay is one of the most common specification questions for delayed egress projects.

The 30-second delay exists primarily for memory care and dementia applications, where a resident may attempt to exit but will typically stop or turn back within 30 seconds when staff responds. In these settings, a 15-second delay may not give staff adequate response time before the door releases.

The Detex ECL-230X series supports both 15-second and 30-second delay settings. Confirm with the AHJ which setting is approved for the specific occupancy before specifying or installing the device. For detailed parts information on the ECL-230X series, see the Detex ECL parts guide.

Delayed Egress vs Free Egress: What Is the Difference

Detex ECL-230X-TDB 3-Point Delayed Egress Exit Control Lock. View product page.

Most commercial exit devices provide free egress: push the bar and the door opens immediately. Delayed egress is a specific modification to that behavior, permitted only in certain building types and only with AHJ approval.

For broader context on exit device types and how to select the right one for your opening, see the exit devices parts guide and the panic hardware for commercial doors guide.

What Happens During a Fire Alarm, Power Failure, and Reset

Fire Alarm Release

A delayed egress device must be wired to the building fire alarm panel. When the fire alarm activates anywhere in the building, the fire alarm panel sends a release signal to every delayed egress device in the system. All delayed egress doors release immediately and revert to standard push-to-exit operation with no delay and no alarm requirement. This release must happen regardless of whether a touchbar has been pressed or a delay sequence is in progress.

If the building's fire alarm panel trips during an active delay sequence, the delay is cancelled immediately and the door opens. People do not have to wait out the remaining delay during a fire event.

Confirm that the fire alarm integration wiring is completed and tested before the delayed egress system is put into service. A delayed egress device that is not connected to the fire alarm system does not meet the code requirements of NFPA 101 Section 7.2.1.6 or IBC Section 1010.1.9.8 and cannot be legally installed on an egress path.

Power Failure Release

Loss of power to the delayed egress device causes the latch to release and the door to revert to free egress. This fail-safe behavior is required by both NFPA 101 and the IBC. The device cannot hold the door locked without power.

The Detex ECL-230X series operates on 24VDC and requires continuous power to maintain the delayed egress locking function. When power is removed, the device releases within milliseconds and the door operates as a standard push-to-exit device.

Some ECL installations include battery backup to maintain alarm annunciation capability during brief power interruptions. However, battery backup does not change the fail-safe locking behavior: the door must release on power loss, even if the battery is powering auxiliary functions.

Reset After a Delay Cycle

After a completed delay cycle (when someone pushes the bar and the door opens after the delay), the device resets automatically when the door returns to the closed and latched position. No manual action is required to reset the device to the delayed egress state. The device is ready for the next cycle as soon as the door is closed.

Some ECL models require a manual reset by staff using an authorized key or credential if the device has been triggered. Confirm the reset behavior of the specific model when specifying or installing the device, since this affects how staff workflows are designed around the door.

Where Delayed Egress Is Used: Building Types and Applications

Detex ECL-230X-W-TDB Weatherized 3-Point Delayed Egress Lock for exterior applications. View product page.

For application-specific guidance on commercial door hardware requirements, see the healthcare door hardware guide, the K-12 school door hardware guide, the universities door hardware guide, the government buildings guide, and the high-rise buildings guide.

Delayed Egress Signage: What the Code Requires

Detex ECL-230X-TB 2-Point Delayed Egress Exit Control Lock for interior applications. View product page.

Both NFPA 101 Section 7.2.1.6 and IBC Section 1010.1.9.8 require that a compliant sign be posted on every delayed egress door. The sign is not optional and is not satisfied by standard exit signage.

The required sign must communicate the following to anyone approaching the door:

• Pushing the bar will activate an alarm
• The door will open after a specified number of seconds (15 or 30, as applicable)
• The information must be clear, readable, and positioned where someone approaching the door will see it before pushing the bar

The Detex ECL-395 series provides code-compliant delayed egress door signs available in multiple languages: English, Spanish, French, French-Canadian, and German. These signs are listed by code as a requirement accompanying every delayed egress installation, not as an accessory upgrade. An installation that has a delayed egress device but lacks the required posted sign fails the code requirements of NFPA 101 and the IBC and will be flagged during any AHJ inspection.

The sign must be inspected annually to confirm it is intact, legible, and properly positioned. A torn, missing, faded, or obstructed sign is a code deficiency even if the device itself is functioning correctly.

2-Point vs 3-Point Delayed Egress: Which Model to Choose

The Detex ECL-230X series is available in two primary locking configurations: 2-point (single latchbolt) and 3-point (top, bottom, and latchbolt). Choosing the correct configuration depends on the door type and the security and code requirements of the opening.

2-Point Delayed Egress (ECL-230X-TB / ECL-230X-W-TB)

Detex ECL-230X-W-TB Weatherized 2-Point Delayed Egress Lock. View product page.

The 2-point model uses a single latchbolt at the device chassis, engaging one strike point on the door frame. This is the standard configuration for most interior delayed egress applications where the door and frame are in good condition and the single latch is sufficient to hold the door during the delay period. The weatherized version (ECL-230X-W-TB) is appropriate for exterior applications exposed to weather.

3-Point Delayed Egress (ECL-230X-TDB / ECL-230X-W-TDB)

The 3-point model adds top and bottom latching in addition to the chassis latch, providing three points of engagement against the frame. This configuration is used when additional door stability is required during the delay period, when the door gap is inconsistent due to door warping, or when the AHJ or security integrator requires multi-point engagement for higher-security delayed egress applications.

For replacement parts, mechanism assemblies, strike kits, bar components, and accessory kits for all ECL-230X models, see the complete Detex ECL parts guide.

Annual Inspection and Testing Checklist for Delayed Egress Devices

NFPA 101 requires annual inspection and testing of life safety features including delayed egress systems. NFPA 80 also requires annual inspection of fire-rated door assemblies, which includes any delayed egress device installed on a fire-rated door. Written records of each inspection must be maintained and made available to the AHJ upon request.

For the complete commercial door hardware maintenance schedule, see the commercial door hardware maintenance checklist.

Functional Operation Test

• Push the touchbar and confirm the alarm activates within one second of contact
• Time the delay from touchbar contact to latch release. Confirm the measured delay matches the programmed setting (15 or 30 seconds)
• Confirm the door opens freely after the delay period without requiring a second push
• Allow the door to close and confirm it returns to the latched and delayed egress state automatically

Fire Alarm Release Test

• With the delayed egress device activated (during the delay sequence), trigger a test signal from the fire alarm panel
• Confirm the latch releases immediately upon receiving the fire alarm signal
• Confirm the door operates as a standard free egress device with no delay during the fire alarm signal
• Reset the fire alarm panel and confirm the delayed egress device returns to normal operation
• This test must be performed in coordination with the building fire alarm system contractor or the AHJ

Power Failure Release Test

• Disconnect power to the delayed egress device at the power supply
• Confirm the latch releases immediately and the door opens freely
• Reconnect power and confirm the device returns to normal delayed egress operation when the door is closed and latched

Signage Inspection

• Confirm the required delayed egress sign is present, intact, and legible
• Confirm the sign is positioned where it is visible to anyone approaching the door from the egress side
• Confirm the sign specifies the correct delay period (15 or 30 seconds as applicable)
• Replace any sign that is torn, faded, obstructed, missing, or specifies the incorrect delay period

Physical Inspection

• Inspect the touchbar or push plate for physical damage, wear, or looseness
• Check all mounting fasteners for tightness
• Inspect the strike kit and latch engagement for alignment and wear
• Confirm the alarm speaker is unobstructed and produces audible output at the required sound level
• Inspect all wiring connections at the device and at the power supply for corrosion or looseness
• Document all inspection results and note any deficiencies found and corrected

Where to Source Delayed Egress Hardware and Replacement Parts

Security Parts stocks Detex ECL-230X delayed egress exit control locks in all four configurations (2-point standard, 2-point weatherized, 3-point standard, 3-point weatherized) and stocks 59 ECL-series replacement parts including internal mechanism assemblies, bar and paddle components, strike kits, cover and shield assemblies, outside trim, cylinder components, accessory kits, and code-required delayed egress door signs.

For the complete parts catalog organized by component category, see the Detex ECL parts guide. For general exit device parts and component identification, see the exit devices parts guide. For guidance on exit device installation, see the exit device installation guide. For troubleshooting a delayed egress device that is not functioning correctly after installation, see the commercial door hardware troubleshooting guide.

Call 845-935-0301 for pre-order compatibility support when selecting replacement parts for an existing ECL installation.

About the Author

This guide was written by the Security Parts team, a commercial door hardware specialist serving locksmiths, facilities managers, general contractors, and security integrators since 2001. Security Parts stocks Detex ECL-230X delayed egress exit control locks in all configurations and 59 ECL-series replacement parts, with same-day shipping on stocked components and pre-order compatibility support at 845-935-0301. For related guidance, see the commercial door fire rating guide and the access control and commercial door hardware integration guide.

Quick Answer

Installing an exit device on a commercial door requires four things done in the right order: confirm your device type and handing before touching the door, mount the chassis at the correct height (touchpad centerline between 34 and 48 inches above finished floor per ANSI A156.3), install the appropriate strike for your configuration (rim, surface vertical rod, or concealed vertical rod), and verify latch engagement and egress force before the door goes back into service.

The steps differ for each device type. Rim devices mount at one point; surface vertical rod (SVR) devices require top and bottom rod adjustment; concealed vertical rod (CVR) devices require factory-prepped door pockets. Start with this guide from the beginning so you are following the correct steps for your specific installation.

Before You Start: Identify Your Exit Device Configuration

The most expensive exit device installation mistake happens before the first hole is drilled: a contractor starts the wrong set of steps because they did not confirm the device type. Rim, SVR, and CVR devices share some installation principles but have completely different strikes, rods, and door prep requirements. Confirm your device type first.

A rim exit device mounts to the door face and latches at one point. See the exit devices parts guide for component identification.

Rim Exit Device

A rim device mounts directly to the door face and latches at one point only. The strike mounts to the door frame. When the touchpad or crossbar is pushed, the latch retracts and the door swings free. Rim devices are the most common configuration and the simplest to install. Look for a single horizontal crossbar across the door width and a surface-mounted chassis on the door face. Common series identifiers: 98, 99, F-98, F-99, 22, 33A.

Surface Vertical Rod (SVR) Exit Device

A surface vertical rod device latches at two points: a top latch that engages the top frame and a bottom bolt that drops into a floor strike or threshold strike. The rods run vertically on the door face. SVR devices are used on doors without a center mullion or on pairs of doors where the active leaf requires multi-point latching. Look for exposed vertical rods running from the chassis to the top and bottom of the door. Common series identifiers: 9827, 9927, 27-series.

Concealed Vertical Rod (CVR) Exit Device

A concealed vertical rod device also latches at top and bottom, but the rods run inside the door cavity rather than on the surface. CVR installations require the door to have factory-prepped mortise pockets for the top latch assembly and a cutout for the bottom bolt. If the door does not arrive pre-prepped, field prep is significantly more involved. Look for a device with no visible rods on the door face. Common series identifiers: 9847, 9947, 47-series.

For help identifying which exit device series is installed or which series to order for a replacement, see the Von Duprin exit device series comparison and the Von Duprin panic bar selection guide.

What You Need: Tools and Materials Checklist

Required Tools

• Drill with bit set (1/4-inch and 3/8-inch bits for through-bolt applications)
• Tape measure
• 4-inch torpedo level or longer spirit level
• Pencil or punch awl for marking
• Phillips and flathead screwdrivers
• Allen/hex key set (for dogging slot and trim screws)
• Nut driver or adjustable wrench (for through-bolt nuts)
• Threadlocker compound (for through-bolt applications on hollow metal doors)
• Chisel (for CVR top latch pocket if door is not pre-prepped)
• Center punch (for accurate pilot hole placement on metal doors)

Materials to Have On Hand Before Starting

• Exit device with all included hardware (confirm nothing is missing before opening the door)
• Manufacturer installation template for the exact series being installed
• Correct strike for the device series (rim strike, top strike, bottom strike/floor box as applicable)
• Through-bolt kit if the door does not include it
• Backplate (required on thin hollow metal doors to prevent chassis deformation)
• For SVR: additional rod length if the door is taller than standard
• For CVR: edge prep kit if the top latch pocket is not factory-installed

Pre-Install Inspection Checklist

Running through this checklist before mounting prevents the two most common failed installations: wrong handing and a device that does not match the door prep. Both require sending the device back for exchange, which costs more time than checking takes.

Confirm the Handing

Stand inside the room facing the door from the secure side, meaning the side the door swings away from you. If the hinges are on your right, the door is right-hand (RHR or RH). If the hinges are on your left, the door is left-hand (LHR or LH). The handing of the exit device must match the door handing.

The handing designation is printed on the device carton label and on the chassis identification label inside the device. Confirm the carton label matches the door before opening packaging. Some exit device series are field-reversible by flipping the latch or lever trim; others are factory-handed and cannot be changed in the field. If the handing is wrong on a non-reversible device, do not mount it. Contact the supplier before proceeding.

Confirm the Door Prep

• Door width: Confirm the chassis length fits the door width. Most exit devices are available in standard widths (typically 36-inch and 48-inch door widths). A chassis that overhangs the door edge will not mount correctly.
• Door thickness: Through-bolt lengths and faceplate depths are door-thickness specific. Confirm the through-bolt length in the kit matches the actual door thickness before drilling.
• For CVR devices: Confirm the top latch mortise pocket dimensions and the bottom bolt cutout match the device specification. Measure the pocket depth, width, and location against the manufacturer template before mounting the chassis.
• For SVR devices: Confirm the rod lengths shipped with the device match the door height. Rods ship at maximum length and must be cut or adjusted down.

Inspect the Device Before Mounting

• Check the touchpad or crossbar for shipping damage (bent bar, cracked end cap, missing trim screws)
• Confirm latch projection by measuring from the latch face to the device faceplate. Standard latch projection is 5/8 inch. Confirm this matches the strike clearance on your frame.
• Verify that all rods, end caps, trim screws, through-bolts, and the installation template are in the packaging
• Confirm the included strike matches the device series. Strikes are series-specific and not interchangeable between device families

Exit Device Mounting Height Requirements

Mounting height is the most-searched specific installation question for exit devices, and the most common source of a code-noncompliant installation.

ANSI A156.3 Height Requirement

ANSI A156.3 requires the touchpad or crossbar centerline to be between 34 and 48 inches above the finished floor. This measurement is taken to the push element itself, not to the device chassis or the top of the touchbar. A device chassis mounted with its center at 38 inches may have a touchpad centerline at 36 inches, depending on the chassis design. Always measure to the push element after mounting, not to the chassis center.

The 34-to-48-inch range also satisfies ADA Section 404.2.7 for accessible door hardware. An exit device within this range does not require an additional accessible pull or lever on the push side.

Mounting Height Reference by Door Height

For ANSI and BHMA hardware standard context, see the ANSI/BHMA door hardware standards guide.

Marking the Mounting Height on the Door

Use the manufacturer installation template for your device series. Position the template at the target height with the push element centerline mark at the intended measurement. Confirm the template is level before marking any holes. Mark all hole center points with a pencil or punch awl before drilling. On metal doors, use a center punch to prevent bit walk when drilling.

Metal Door vs Wood Door Installation Differences

Hollow Metal Door Installation

Through-bolt mounting is required on hollow metal (HM) doors. The hollow interior of the door does not provide enough thread engagement for wood screws or short machine screws to resist the repeated lateral force applied to the exit device during daily egress cycles. Through-bolts pass completely through the door and are secured with nuts on the interior face.

• Use the through-bolt kit supplied with the device or ordered separately for the series
• A backplate on the interior door face is required on thin hollow metal doors (typically 14 gauge or thinner) to prevent the through-bolt nuts from pulling through the door face under load
• Apply threadlocker compound to through-bolt threads before tightening. Vibration from repeated door operation can loosen nuts over time without it
• Tighten nuts to the manufacturer-specified torque (typically 60--80 in-lb). Do not over-tighten, which can deform the chassis or door face

Wood Door Installation

Solid core wood doors can use the machine screws provided with the exit device in most cases. However, through-bolt mounting is still recommended on high-cycle openings or any door that will see heavy commercial traffic.

• Pilot holes should be drilled at 70--80% of the screw diameter to prevent splitting on solid wood doors
• Minimum door thickness for adequate thread engagement is typically 1-3/4 inches. Confirm the fastener length in the kit is appropriate for the actual door thickness
• On doors with veneer or laminate faces, over-tightening can crack or delaminate the surface. Tighten just until the chassis is firmly seated

Aluminum Storefront and Glass Doors

Exit devices on aluminum storefront frames require a device series specifically listed for that door and frame type. Standard exit device hardware is not designed for narrow stile aluminum extrusions. Glass doors with patch fittings require a device series compatible with the patch dimensions. Confirm the device series listing before ordering for any aluminum or glass door application.

How to Install a Rim Exit Device (Step by Step)

Rim installation is the most straightforward of the three device types. The device mounts to the door face with through-bolts, and the rim strike mounts to the door frame. For Von Duprin 98/99 series rim device components, see the Von Duprin 9899 series parts guide. For Falcon 19, 24, and 25 series rim devices, see the Falcon 19/24/25 series exit device parts guide.

Step 1: Prepare the Door and Apply the Template

Position the manufacturer installation template on the door face at the target mounting height. The template shows the hole pattern for the specific device series. Confirm the template is oriented correctly for the door handing (RHR or LHR). Use the template center marks to align the push element centerline at the intended height. Hold the template in position and mark all hole centers with a pencil. Confirm the level before marking.

Step 2: Drill Mounting Holes

On hollow metal doors, use a center punch at each marked location before drilling to prevent bit walk. Drill pilot holes for through-bolts using the bit diameter specified in the installation template (typically 1/4 inch for standard through-bolts). On wood doors, drill pilot holes at 70--80% of screw shank diameter. Clear all chips before proceeding.

Step 3: Mount the Chassis to the Door Face

Set the device chassis against the door face with all holes aligned. Insert through-bolts (or screws on wood doors) through the chassis and door. Start all fasteners before tightening any of them. Once all fasteners are started, tighten in a cross pattern to draw the chassis evenly against the door face without rocking. Apply threadlocker to through-bolt threads on metal doors before tightening the nuts.

Step 4: Install the Rim Strike on the Door Frame

Hold the door in the closed position and mark the strike location on the door frame by pressing the door gently against the frame and transferring the latch centerline. The rim strike must align with the latch both vertically and laterally. Fasten the strike to the frame with the provided fasteners. Most rim strikes have slotted holes for minor vertical adjustment.

Step 5: Set the Latch Projection and Strike Alignment

Close the door and observe how the latch enters the strike. The latch should enter cleanly and engage the strike keeper without rolling back or dragging on the strike lip. If the latch rolls back (does not engage), the strike is too far from the frame face. If the latch drags, the strike is too close or misaligned vertically. Adjust strike position as needed and re-fasten.

Step 6: Secure All Fasteners and Verify Operation

Fully tighten all through-bolt nuts and mounting screws. Operate the touchpad 10 times in succession and confirm the latch retracts fully and consistently each time. Confirm the door latches fully when closed without requiring any pressure on the door face. Proceed to the post-install testing checklist.

How to Install a Surface Vertical Rod (SVR) Exit Device (Step by Step)

SVR installation adds two additional steps to the rim process: top and bottom rod length adjustment. The rods ship at maximum length and must be shortened or adjusted to the actual door height. For Von Duprin 22-series, 33A, 35A, and 55-series SVR devices, see the Von Duprin 22/33A/35A/55 series exit device parts guide.

Step 1: Prepare the Door and Confirm Rod Lengths

Apply the installation template at the target mounting height and mark all chassis holes. Before drilling, hold the device against the door and extend the top rod toward the top frame and the bottom rod toward the floor. Confirm the rods reach their respective strikes with the device chassis at the target mounting position. If the door height is less than the maximum rod length, note the adjustment needed.

Step 2: Mount the Chassis to the Door

Follow Steps 1 through 3 from the rim installation procedure above. The chassis mounting process is identical. Confirm the chassis is level before fully tightening through-bolt nuts.

Step 3: Attach and Adjust the Top Rod Assembly

Connect the top rod to the chassis rod connection point. Run the rod toward the top of the door. Most SVR top rods have a threaded coupler at the strike end that allows length adjustment. Thread the coupler in or out until the top latch engages the top strike correctly when the touchpad is released. Confirm the top latch retracts fully when the touchpad is pressed.

Step 4: Attach and Adjust the Bottom Rod Assembly

Connect the bottom rod to the chassis and run it toward the floor. The bottom rod connects to the floor bolt, which drops into a floor strike or threshold strike. Adjust the rod length so the floor bolt drops cleanly into the floor strike and engages fully when the touchpad is released. The bottom bolt should retract fully when the touchpad is pressed. Confirm both rod connections are tight after adjustment.

Step 5: Install Top and Bottom Strikes

Install the top strike in the header frame at the height required to align with the top latch centerline. Install the floor strike (or threshold strike) at the floor position aligned with the bottom bolt centerline. Both strikes typically have slotted mounting holes for minor alignment adjustment.

Step 6: Set Rod Tension and Test Both Latch Points

Operate the touchpad and confirm both the top latch and the bottom bolt retract simultaneously and fully. Close the door and confirm both latch points engage their respective strikes cleanly. Adjust top or bottom rod length if either latch point drags, rolls back, or fails to engage fully.

How to Install a Concealed Vertical Rod (CVR) Exit Device (Step by Step)

Von Duprin 98/9947 CVR exit device. Rods are concealed inside the door cavity. View product page. For all CVR replacement parts, see the Von Duprin 9947 CVR exit device parts guide.

CVR installation is the most complex of the three types because the rods run inside the door cavity and the door must be pre-prepped with specific pockets and cutouts. Do not attempt CVR installation on a door that has not been factory-prepped or field-prepped to the manufacturer's specifications.

Step 1: Confirm Door Prep (Top Latch Pocket and Bottom Bolt Cutout)

Measure the top latch mortise pocket (typically at the top of the door edge) against the manufacturer's dimension specifications. Confirm the pocket depth, width, and distance from the door top match the CVR device requirements. Measure the bottom bolt cutout at the door bottom edge and confirm it aligns with the floor strike location. If either prep dimension is incorrect, field modification is required before mounting the chassis.

Step 2: Mount the Chassis to the Door

Apply the installation template and mark all chassis mounting holes. Drill and mount the chassis using the same through-bolt process as rim and SVR installation. Confirm the chassis is level and fully seated before tightening.

Step 3: Route and Connect the Top Latch Assembly

Feed the top latch assembly up through the door cavity to the top latch pocket. Connect the top rod to the chassis drive mechanism and route it through the door interior. Seat the top latch housing in the top pocket and fasten it according to the manufacturer specification. Confirm the top latch retracts when the touchpad is pressed and extends fully when released.

Step 4: Route and Connect the Bottom Bolt Assembly

Feed the bottom bolt assembly down through the door cavity to the bottom cutout. Connect the bottom rod to the chassis drive and route it to the bottom bolt housing. Seat the bottom bolt housing in the bottom cutout and fasten it. Confirm the bottom bolt drops fully when the touchpad is released and retracts fully when the touchpad is pressed.

Step 5: Install Top and Bottom Strikes

Install the top strike in the header frame at the correct height for the top latch centerline. Install the floor strike aligned with the bottom bolt centerline. Both strikes must account for the latch projection depth of the CVR device, which may differ from the SVR projection depth on the same door configuration.

Step 6: Check Bolt Engagement and Adjust

Close the door and verify that both latching points engage cleanly. Cycle the touchpad 10 times and confirm both the top latch and bottom bolt retract and extend consistently. Adjust rod connections at the chassis if either bolt is not traveling the full stroke. Confirm all interior fasteners on the latch and bolt housings are tightened before final inspection.

Dogging the Exit Device After Installation

Left: Von Duprin 090040 hex dogging shaft. Right: Von Duprin 107813 cylinder dogging kit. Both are used for mechanical dogging on standard (non-fire-rated) openings.

Dogging holds the exit device latch in the fully retracted position so the door operates as a standard push-pull door without requiring touchpad pressure. It is typically engaged during business hours and released after closing. Dogging is set after installation, not before.

What Dogging Does

When the latch is dogged, the touchpad or crossbar is held in the depressed position mechanically. The door swings freely in both directions without any requirement to push the touchpad. This is the normal daytime operating mode for high-traffic openings that do not require controlled egress during business hours.

Mechanical (Hex Key) Dogging

The dogging slot is located on the face of the chassis near the touchpad connection. Insert a 3/32-inch hex (Allen) key into the dogging slot and turn it to lock the touchpad in the depressed position. The hex key is removed after dogging; the device stays dogged until the key is reinserted and turned to release.

Mechanical dogging is not permitted on fire-rated openings. A fire door must self-latch every time it closes, and mechanical dogging defeats that requirement. If a fire-rated opening needs free-swing daytime operation, electric dogging is the only compliant option.

Electric Dogging (QEL and MEL Options)

Electric dogging uses an internal solenoid to hold the latch retracted under access control command. When power is cut or the fire alarm triggers, the solenoid releases and the device returns to full latching function. QEL (quiet electric latch retraction) and MEL (motor-driven electric latch retraction) are the two common electric dogging options. For the difference between the two and which to specify, see the Von Duprin QEL vs MEL guide and the access control and commercial door hardware integration guide.

Electric Strike Alignment for Exit Devices

When an exit device is paired with an electric strike for access control, the strike and the device latch must be aligned before the installation is complete. Misalignment is the most common cause of a latch that functions correctly under hand operation but fails to engage reliably under normal door operation. For electric strike replacement parts, see the electric strike parts guide.

Rim Device and Electric Strike Alignment

The rim strike cutout must align with the rim latch both laterally and vertically. With the door in the closed position, confirm that the latch centerline aligns with the center of the electric strike keeper opening. Most electric strikes have a small adjustment range within the frame pocket. Use this range to center the keeper on the latch before final fastening.

Vertical Rod Device and Electric Strike

On SVR and CVR installations, the electric strike typically electrifies only the top latch. The bottom bolt remains mechanical and always extends when the door closes. The top latch alignment process is the same as for a rim device: confirm the top latch centerline aligns with the electric strike keeper centerline before final fastening. The bottom floor strike is installed mechanically and does not require electrical connection.

Testing the Strike and Device Together

Before energizing the strike, confirm the latch enters the keeper cleanly under manual door operation. Then energize the strike and test the following: the touchpad releases the latch while the strike is energized (the latch must retract even though the strike is holding it); the door opens when power is cut (fail-safe) or when the touchpad is pressed while the strike is powered (fail-secure). See the how to install an electric strike guide for detailed wiring and alignment procedure.

Fire-Rated Door Exit Device Installation Requirements

Fire-rated openings carry additional installation rules that are not optional. A standard panic hardware installation that violates any of these requirements fails the fire door assembly certification. For the full fire door hardware context, see the commercial door fire rating guide.

Fire Exit Hardware vs Panic Hardware

Exit devices on fire-rated doors must be UL listed fire exit hardware. Standard panic hardware does not carry a fire listing and cannot be substituted. The UL fire listing label appears on the device chassis and on the packaging. It identifies the specific fire door assembly types the device is tested for. Confirm the device's fire listing before installing on any fire-rated opening. For guidance on when panic hardware is required and the distinction from fire exit hardware, see the panic hardware for commercial doors guide.

No Mechanical Dogging on Fire-Rated Openings

Mechanical dogging (hex key or thumbturn dogging) is not permitted on fire-rated openings. It prevents the device from self-latching when the door closes, which voids the fire rating of the assembly. The only compliant option for free-swing operation on a fire door is electric dogging (QEL or MEL), which releases automatically when power is cut or when a fire alarm signal is received.

Coordinator and Closer Requirements on Paired Fire Doors

Fire-rated pairs of doors require a door coordinator that sequences the closing of the active and inactive leaves. Without a coordinator, the active leaf may close before the inactive leaf and prevent full latching. A door closer is also required on every fire-rated exit device opening. The closer must be listed for fire-rated assemblies and set to close and latch the door fully from any open position.

Post-Install Testing Checklist

Run through this checklist before considering the installation complete. Every item here reflects either a code requirement or a common failure mode that is easier to catch now than after the door has been in service.

Functional Egress Test

• Apply egress force to the touchpad and confirm the latch retracts. Maximum actuating force is 15 pounds for standard devices (30 pounds for fire-rated devices) per ANSI A156.3
• Push the door open from the fully closed position and confirm it swings to full open without binding
• Release the touchpad and allow the door to close. Confirm it latches fully without requiring additional force on the door face

Latch Projection and Strike Engagement Check

• Measure the latch projection from the device faceplate face. Confirm it matches the specification (typically 5/8 inch)
• Observe the latch entering the strike from the side if possible. The latch tip should enter the keeper cleanly without rolling back on the strike lip
• Check for any rattle of the latch in the strike keeper. A rattle indicates insufficient keeper depth or a worn latch

Dogging Function Test

• Insert the hex key and dog the device. Confirm the touchpad stays in the depressed position without the hex key
• Operate the door as push-pull and confirm it swings freely in both directions
• Insert the hex key and release the dogging. Confirm the latch returns to the extended position and the touchpad operates normally

Electric Strike Test (If Applicable)

• Fail-safe: cut power to the strike and confirm the door opens freely
• Fail-secure: restore power and confirm the door holds when pulled from outside
• Exit release: with the strike powered, push the touchpad and confirm the latch retracts and the door opens
• Confirm the strike solenoid does not buzz, click excessively, or produce heat above ambient after 60 seconds of operation

Fire Door Compliance Check (If Applicable)

• Confirm no hex key or mechanical dogging block is in place
• Open the door to 90 degrees and release it without assistance. Confirm the door closes fully and latches without any manual intervention
• Confirm the door coordinator sequences the leaves correctly on pairs (inactive closes before active)
• Confirm the door closer is set to pull the door to positive latch from any open position between 5 and 90 degrees

Common Exit Device Installation Mistakes

These are the installation errors that result in a callback, a failed inspection, or a code violation. Each one is preventable with the pre-install checklist above.

Installing the Wrong Handing

The device chassis is mounted upside-down or mirrored relative to the door handing. The touchpad ends up on the wrong side of the door, the latch points the wrong direction, or the trim does not align. Catch this during the pre-install handing check before any holes are drilled. If the device is not field-reversible, a factory exchange is the only resolution.

Measuring Mounting Height to the Chassis Instead of the Push Element

The ANSI A156.3 requirement is for the push element centerline, not the chassis center. A chassis center at 40 inches does not guarantee the touchbar centerline is at 40 inches. Measure to the touchpad or crossbar after mounting and confirm the push element is within the 34-to-48-inch range before final fastening.

Using Screw Mounting on a Hollow Metal Door

Short machine screws or wood screws in a hollow metal door do not have enough material engagement to resist repeated egress force. The screws pull out over time, the chassis loosens, and the device fails to function reliably. Through-bolt mounting with a backplate is required on all hollow metal door installations.

Using the Wrong Strike for the Device Series

Exit device strikes are series-specific. A strike from a different series may appear to fit physically but will have a different keeper depth or latch engagement geometry that causes latch rollback. Always confirm the strike part number matches the device series before ordering.

Skipping Rod Length Adjustment on SVR Devices

SVR rods ship at maximum length. Installing them without adjustment for the actual door height results in rods that bottom out before the chassis is fully seated, or rods that are too long and prevent the bottom bolt from dropping fully into the floor strike. Always measure and adjust rod length to the actual door height before mounting the chassis.

Mechanical Dogging on a Fire-Rated Opening

Applying mechanical dogging on a fire-rated exit device opening voids the fire door assembly certification and creates a life safety violation. If the opening requires free-swing daytime operation and carries a fire rating, order a device with QEL or MEL electric dogging before installation.

Omitting the Through-Bolt Nuts or Skipping Threadlocker

Through-bolts inserted without nuts, or nuts tightened without threadlocker on metal doors, loosen from vibration within weeks of installation. The chassis develops play, the latch alignment drifts, and the device requires reinstallation. Apply threadlocker before tightening all through-bolt nuts.

Troubleshooting Exit Device Installation Problems

For broader commercial door hardware troubleshooting guidance, see the commercial door hardware troubleshooting guide.

Touchpad Is Hard to Push

The most common cause is a chassis that is not seated flat against the door face. If the chassis is bowed or misaligned, the touchpad pivot binds against the chassis frame. Check that through-bolts are tightened evenly and that the chassis face is flush against the door. Over-tightened through-bolts can deform thin door faces and cause the same symptom; back off the nuts slightly and recheck.

Latch Does Not Engage the Strike When the Door Closes

Vertical or lateral misalignment between the latch and the strike keeper is the most likely cause. Mark the latch position on the strike face by applying chalk or crayon to the latch tip and closing the door once. The mark on the strike shows whether the latch is hitting above, below, or to the side of the keeper opening. Adjust the strike position accordingly.

Door Does Not Latch After Closing (SVR or CVR)

If the top or bottom latch point is not engaging after the door closes, the rod length is typically the problem. The rod may be too short (latch does not reach the strike) or too long (the rod is buckling before the latch fully extends). Adjust the threaded coupler at the rod connection point in small increments and retest after each adjustment.

Exit Device Rattles or Has Play After Mounting

Through-bolt nuts that are not fully tightened, or a backplate that is missing on a thin hollow metal door, are the two most common causes. Tighten all nuts to the specified torque and confirm the backplate is installed and seated. If play persists after tightening, inspect the chassis mounting holes for elongation, which indicates the door material has been overloaded and needs reinforcement.

Device Is Handed Incorrectly After Mounting

If the touchpad is on the correct side but the latch projects in the wrong direction, check the manufacturer documentation for field-reversibility. Some device series allow the latch to be reversed by repositioning a single component; others require a full exchange. Contact 845-935-0301 for part exchange support before disassembling the device chassis.

Maintenance After Installation

For a complete annual maintenance schedule for all commercial door hardware, see the commercial door hardware maintenance checklist.

Initial 30-Day Inspection

High-traffic doors should receive a 30-day check after installation. Re-check all through-bolt torque after the first month of use. On SVR devices, re-check rod length adjustment after the first month, since rod connection points can shift slightly during initial traffic cycles. Confirm latch engagement has not drifted from the initial setting.

Annual Inspection Points

• Touchpad pivot wear: apply slight lateral pressure to the touchpad. Any lateral movement beyond minimal play indicates pivot bushing wear
• Latch bolt engagement depth: confirm the latch still engages the strike keeper fully. A worn latch tip can reduce engagement depth over time
• Rod connection points (SVR and CVR): confirm rod couplers and connection fasteners are tight and rods have not shifted from adjusted length
• Strike alignment drift: recheck latch-to-strike alignment with the chalk test annually on high-cycle doors
• Dogging mechanism: confirm hex key dogging engages and releases without binding
• Egress force: retest actuating force with a pull scale and confirm it remains below 15 pounds (30 pounds on fire doors)

NFPA 80 Fire Door Inspection Requirements

NFPA 80 requires annual inspection and documentation for all fire-rated door assemblies, including the exit device, hinges, closer, and frame. The inspection must confirm self-latching function, correct device operation, absence of mechanical dogging, and that no components have been modified or replaced with non-listed parts. A written record of each inspection must be maintained.

Where to Source Exit Device Parts and Replacements

Security Parts stocks exit device parts across Von Duprin, Falcon, and other commercial hardware lines. For parts by device type, see the exit devices parts guide and the commercial exit device parts guide. For OEM versus aftermarket guidance before ordering replacement components, see the OEM vs aftermarket commercial door hardware guide.

Call 845-935-0301 for pre-order compatibility support when you need to confirm a part number against the installed device.

About the Author

This guide was written by the Security Parts team, a commercial door hardware specialist serving locksmiths, facilities managers, general contractors, and security integrators since 2001. Security Parts stocks exit device parts across Von Duprin, Falcon, and other commercial hardware lines, with same-day shipping on stocked components and pre-order compatibility support at 845-935-0301. For related installation guidance, see how to install a commercial door closer and commercial door hardware replacement and repair guide.

Quick Answer

The Schlage N123 is an NDE series wireless cylindrical lock. Before ordering any Schlage N123 parts, confirm three things:

• Confirm the model is N123, not N523. Both are NDE wireless locks, but they use different part numbers. The N123 and N523 keycam and plunger assemblies are not interchangeable. The model number is printed on the back of the inside trim or in the project hardware schedule.
• Keycam assemblies: 12 N123 keycam assemblies are stocked, each corresponding to a specific lock function. The part number encodes the function. Replacing a keycam with the wrong function code changes how the lock operates.
• Plunger assemblies: Five plunger types are stocked: push button, push-turn button, spanner button, emergency turn button, and emergency button. The correct type matches the inside trim of the installed lock.
• 21 Schlage N123 parts are stocked at Security Parts across keycam assemblies, plunger assemblies, the RX switch upgrade kit, HSLR screwpack, and mounting screw.

Call 845-935-0301 for pre-order compatibility support before placing your order.

What the Schlage N123 Is

The Schlage N123 is part of the NDE series, Schlage's wireless cylindrical lock platform designed for access control integration in commercial and institutional buildings. NDE locks communicate wirelessly with the access control system through a credential reader built into the outside trim, eliminating the need for data wiring at each door.

The N123 is configured for applications where the door or lock geometry differs from the standard N523 configuration. While both models are NDE wireless cylindrical locks, they use different internal components. The keycam assemblies, plunger assemblies, and other trim parts are specific to each model and cannot be substituted between them.

The N123 is commonly found in healthcare facilities, educational buildings, and government offices where wireless access control was installed during construction or renovation. Replacement parts are ordered when a keycam wears or fails (most often seen as difficulty retracting the latch with a key), when a plunger assembly needs replacement due to physical wear or button malfunction, or when the access control integrator adds an RX switch function to the existing installation.

The N123 is also an appropriate replacement lock when a facility is upgrading from an older Schlage ND Series cylindrical lock (non-wireless) to the NDE wireless platform on doors where the physical prep does not accommodate the standard N523. Because the NDE platform integrates directly with credential management systems, the parts that control the mechanical function of the lock, particularly the keycam and plunger, are specified at the time of installation to match the access control behavior required at each opening. Replacing any of these components requires confirming both the mechanical part number and the intended lock function before ordering.

For the companion guide covering the N523 model, see the Schlage NDE wireless lock parts guide. That guide covers N523-specific keycam assemblies, cylinder options, and tailpiece configurations, which are not applicable to the N123.

How to Confirm You Have an N123, Not an N523

Ordering parts for the wrong NDE model is the most common ordering error on N123 service calls. Before placing any order, confirm the model number using one of these methods:

• Label on the inside trim: Remove the inside trim rose cover. The model number is typically printed or stamped on the back of the inside escutcheon or the lock chassis.
• Hardware schedule: The original project hardware schedule submitted during construction specifies the exact model number for each opening. This is the most reliable source for facilities teams managing a building with a consistent hardware specification.
• Work order documentation: If the installation was performed under a service contract, the original work order typically records the lock model and function code for each door.

If the model number is not accessible from any of these sources, call 845-935-0301. The Security Parts team can help identify the correct model based on part numbers already installed or hardware schedule details.

Schlage N123 Keycam Assemblies

Schlage N123-076 Keycam Assembly. View product page and order.

The keycam assembly is the internal mechanical component that translates key cylinder rotation into latch retraction. The keycam part number specifies both the physical geometry and the lock function (storeroom, classroom, office, etc.). Using a keycam with the wrong function code causes the lock to operate incorrectly, so the replacement must match the installed function exactly.

Twelve N123 keycam assemblies are stocked at Security Parts, covering the complete range of standard functions available for the N123 wireless lock.

Keycam replacement is the most common mechanical service call on the N123. The symptom is typically that the key will not retract the latch, or that it retracts with significantly more force than normal. This indicates that the keycam follower or the cam itself has worn past the service threshold. In high-turnover institutional environments, keycam wear is accelerated by the volume of key turns and the frequency of forced or rushed key operation by staff and students. A worn keycam that is not replaced promptly increases wear on adjacent components, including the cylinder and the latch chassis.

When replacing a keycam assembly, confirm the function code of the installed keycam before ordering. The function code determines how the lock responds to a key turn: whether the latch retracts freely, requires a credential to unlock first, or remains locked regardless of credentials. An incorrect keycam function changes the security behavior of the door.

Schlage N123 Plunger Assemblies

Schlage N123-087 Spanner Button Plunger Assembly. View product page and order.

The plunger assembly controls the inside button or thumbturn mechanism of the N123. Five plunger assembly types are stocked, each corresponding to a different inside trim configuration. The correct replacement must match the existing inside button type exactly, because the plunger geometry is specific to each button style.

Identifying Your Plunger Type

Look at the inside trim of the installed N123. The shape and operation of the inside button identifies the correct plunger assembly:

• Push button (momentary press): A simple button that retracts the latch when pressed and releases when lifted. Use the N123-086 push button plunger bar assembly.
• Push-turn button (press and rotate): A button that requires pressing in and turning to hold the latch retracted. Use the N123-085 push-turn button plunger assembly.
• Spanner button (accessible thumb-turn style): A wider, grip-friendly button that allows operation without fine motor grip. Commonly specified under ADA accessibility requirements. Use the N123-087 spanner button plunger assembly.
• Emergency turn button and plunger: An emergency egress button allowing the door to be unlocked from the inside. Use the N123-084 ND Series emergency turn button and plunger.
• Emergency button plunger: A variant of the emergency function in a push-style plunger configuration. Use the N123-034 emergency button plunger.

For access control applications in healthcare, educational, and government facilities where the N123 is commonly installed, see the access control and commercial door hardware integration guide.

Schlage N123-062 RX Switch Upgrade Kit

Schlage N123-062 RX Switch Upgrade Kit. View product page and order.

The N123-062 RX switch upgrade kit adds a request-to-exit (RX) switch to the inside trim of the N123 wireless lock. When the inside lever handle is depressed, the RX switch sends a signal to the access control system indicating that a person is exiting through the door.

The RX switch upgrade is used when:

• The original N123 installation did not include RX switch wiring and the access control system now requires exit signal monitoring
• The security integrator is adding exit logging to previously unmonitored doors
• The facility is upgrading its access control platform to one that uses RX switch input for door control or reporting
• Code compliance or security policy requires that all controlled openings generate an exit event in the access control log

The N123-062 is an upgrade kit, not a standard replacement part. It adds capability that was not present in the original installation. If the lock already has an RX switch installed and it has failed, contact 845-935-0301 to confirm the correct replacement component before ordering.

Schlage N123 Hardware and Installation Components

Schlage N123-120 HSLR Screwpack. View product page and order.

• N123-120 HSLR screwpack: The hardware kit containing the mounting screws for the HSLR (high security long reach) installation configuration. Replace when original screws are stripped, damaged, or missing from the installation. The HSLR configuration is used when the mounting throughbolts must reach through a thicker door or reinforcing plate.
• N123-020 mounting screw: Individual mounting screw for the N123 lock body. Replace when a single screw is stripped or damaged and the full screwpack is not needed. Order the N123-120 screwpack when multiple screws require replacement.

Both the N123-120 screwpack and the N123-020 mounting screw are commonly needed after a lock has been removed and reinstalled multiple times during access control system upgrades or lock swaps. Thread stripping in the door chassis is one of the more common causes of loose lock installation on doors that have seen repeated hardware changes. Keeping a supply of N123-120 screwpacks on hand reduces service time when screws strip during a scheduled replacement program.

For guidance on maintenance schedules that include hardware inspection for wireless locks, see the commercial door hardware replacement and repair guide. For information on ANSI/BHMA performance standards that apply to the N123 as a Grade 1 cylindrical lock, see the ANSI/BHMA door hardware standards guide.

Complete Schlage N123 Parts Reference

Where to Source Schlage N123 Parts

Security Parts stocks all 21 Schlage N123 parts across keycam assemblies, plunger assemblies, the RX switch upgrade kit, HSLR screwpack, and mounting screw. Same-day shipping on stocked components. Call 845-935-0301 for pre-order compatibility support if you need help confirming the correct keycam function code or plunger type before ordering.

For the companion guide covering N523 parts, see the Schlage NDE wireless lock parts guide. For guidance on commercial door hardware maintenance schedules that cover wireless lock inspection intervals, see the commercial door hardware maintenance checklist. For OEM versus aftermarket guidance on Schlage wireless lock parts, see the OEM vs aftermarket commercial door hardware guide. For Schlage deadbolt parts commonly installed alongside the N123, see the Schlage B663 classroom deadbolt guide.

The N123 is widely specified in healthcare facilities, universities and colleges, and government buildings, where wireless access control is integrated with credential management systems on NDE-compatible platforms.

About the Author

This guide was written by the Security Parts team, a commercial door hardware specialist serving locksmiths, facilities managers, general contractors, and access control integrators since 2001. Security Parts stocks the complete Schlage N123 parts catalog across all keycam assemblies, plunger assemblies, the RX switch upgrade kit, HSLR screwpack, and mounting screw, with same-day shipping on stocked components and pre-order compatibility support at 845-935-0301.

Quick Answer

The Falcon Q500 series is a commercial deadbolt line. The only replacement parts stocked for the Q500 series are deadbolt cylinders, available in 5-pin, 6-pin, and 7-pin configurations across multiple finishes. Before ordering any Falcon Q500 parts, confirm two things:

• Pin count: The number of pin stacks in the installed cylinder. This determines which Q500 cylinder part number applies. A 5-pin, 6-pin, and 7-pin cylinder are not interchangeable even on the same deadbolt body. The pin count is typically stamped on the existing cylinder or recorded in the hardware schedule.
• Finish: The surface finish of the installed deadbolt. Multiple Q500 cylinder part numbers exist for the same pin count in different finishes. Ordering a cylinder in the wrong finish produces a cylinder that is functionally correct but visually mismatched.
• 20 Falcon Q500 cylinders are stocked at Security Parts across all pin count and finish combinations.

Call 845-935-0301 for pre-order compatibility support if you cannot confirm the pin count or finish from the installed unit.

What the Falcon Q500 Series Is

The Falcon Q500 is a commercial-grade deadbolt series used in institutional and commercial applications including government facilities, educational buildings, healthcare entries, and multi-tenant commercial properties. The Q500 deadbolt provides keyed entry from the outside with a thumbturn on the inside, offering a straightforward key-in deadbolt function for doors where access control does not require a lever or knob mechanism.

The Q500 is distinct from the Falcon Q330 series, which is a cylindrical lever lock. The Q330 uses key-in-lever cylinders designed for a lever lockset body. The Q500 uses deadbolt cylinders with a different cam and tailpiece geometry. The two cylinder series are not interchangeable. If the hardware being serviced is a lever lock with a handle, see the Q330 guide. If it is a standalone deadbolt with a thumbturn, you are on the correct page.

For broader context on Falcon hardware, parts, and product lines stocked at Security Parts, see the Falcon hardware brand page.

How Falcon Q500 Cylinder Replacement Works

The Falcon Q500 deadbolt is designed to allow cylinder replacement without removing the deadbolt body from the door. This is important for facilities managers and locksmiths who need to rekey or replace a cylinder due to key compromise, wear, or a change in key control requirements, without disrupting the door prep or the thumbturn assembly.

Cylinder replacement is the correct repair in these situations:

• The cylinder plug has worn and the key no longer operates smoothly
• Keys have been lost or compromised and the facility requires rekeying
• The facility is transitioning to a new key control system that requires a different keyway
• The cylinder has been physically damaged by a forced entry attempt
• The existing cylinder finish has degraded and replacement is preferred over refinishing

The cylinder replacement process on the Q500 series does not require specialty tools in most cases. A standard flathead screwdriver is typically sufficient to release the cylinder retaining mechanism and extract the cylinder from the deadbolt body. The replacement cylinder slides in and locks with the same mechanism. The entire field replacement, once the correct part is on hand, takes under ten minutes for a trained locksmith or experienced facilities technician. The time investment is in confirming the correct part number before the service call, not in the physical replacement itself.

When ordering a replacement cylinder, confirm the pin count of the existing cylinder before placing the order. Installing a 6-pin cylinder in a deadbolt that was originally keyed to a 7-pin system, for example, will mean the existing keys no longer operate the lock. If the installation is being rekeyed intentionally, the pin count of the new cylinder must match the new key system.

For general guidance on planned replacement and maintenance schedules for commercial door hardware, see the commercial door hardware maintenance checklist.

Falcon Q500 7-Pin Deadbolt Cylinders

Falcon Q500-057 Deadbolt Cylinder, 7-Pin. View product page and order.

Seven-pin cylinders provide the largest key combination pool of the three Q500 configurations. They are used in higher-security applications where key control is critical and where restricted keyways or master key systems require the additional pin stack to accommodate the key cut depth range. Five 7-pin Q500 cylinders are stocked.

Falcon Q500 6-Pin Deadbolt Cylinders

Falcon Q500-012 Deadbolt Cylinder, 6-Pin. View product page and order.

Six-pin cylinders are the most widely used configuration in the Q500 series. They provide a large combination pool suitable for master key systems in most commercial and institutional settings without requiring the full security overhead of a 7-pin system. Eight 6-pin Q500 cylinders are stocked, covering the broadest range of finishes in the series.

Falcon Q500 5-Pin Deadbolt Cylinders

Falcon Q500-072 Deadbolt Cylinder, 5-Pin. View product page and order.

Five-pin cylinders have a smaller key combination pool than 6-pin or 7-pin configurations. They are found in Q500 deadbolts specified for lower-security or lower-traffic applications where master key system complexity is not a requirement. Seven 5-pin Q500 cylinders are stocked.

Selecting the Right Q500 Cylinder: Pin Count and Finish

Most ordering errors on Q500 cylinder replacements come from one of two mistakes: ordering the wrong pin count because the existing cylinder was not checked, or ordering the correct pin count in the wrong finish. Both mistakes require a return and delay the repair.

How to Confirm Pin Count

The pin count of an installed Q500 cylinder is typically documented in the original hardware schedule submitted during construction or renovation. If the hardware schedule is not available, a locksmith can disassemble the cylinder on-site and count the pin stacks directly. The pin count is not visible from the outside of the installed deadbolt.

When the pin count cannot be confirmed from documentation and on-site disassembly is not immediately possible, a locksmith can sometimes estimate the pin count range from the key blank profile. Different keyways are licensed to specific pin count ranges, so the keyway stamped on the key blade can narrow the search to either 5-pin, 6-pin, or 7-pin cylinders depending on how the master key system was originally designed. This is an estimate method only and should not substitute for a confirmed count when the exact replacement must match an existing key system.

If the facility uses a master key system, the key control documentation will also indicate the pin count, since the master key system design is tied to the pin stack configuration. In most institutional master key systems, the pin count across all cylinders in a building section is uniform.

How to Confirm the Correct Finish

The finish code for the installed Q500 deadbolt is typically found on the specification sheet submitted at the time of original installation. If the spec sheet is not available, the finish can be identified visually by comparing the installed deadbolt to ANSI/BHMA finish code samples. Common finish codes used on the Q500 series include US26D (satin chrome), US10B (oil-rubbed bronze), US32D (satin stainless), US3 (polished brass), and US10 (satin bronze).

Multiple Q500 cylinders share the same pin count but differ only in finish. Ordering a cylinder with the correct pin count but an incorrect finish results in a functionally correct cylinder that does not match the installed trim. For applications where visual uniformity is required, such as healthcare corridors, educational buildings, or government facility entries, finish matching is as important as pin count matching.

The most common ordering mistake when finish is uncertain is to order a "safe" neutral finish that does not match the installed trim. On a public-facing building entry or a corridor where hardware uniformity is part of the facility standard, a mismatched cylinder finish requires a second order and a second service call. When the finish cannot be confirmed from documentation, it is better to pause the order and physically inspect the installed deadbolt before placing it, or to call the Security Parts team at 845-935-0301 for guidance on identifying the finish from the installed hardware.

For guidance on hardware standards and finish code conventions, see the ANSI/BHMA door hardware standards guide.

Complete Falcon Q500 Parts Reference

Falcon Q500-014 Deadbolt Cylinder, 7-Pin. View product page and order.

Where to Source Falcon Q500 Parts

The Falcon Q500 deadbolt is commonly specified in institutional and government construction projects as the primary entry deadbolt on office doors, storage rooms, and utility spaces that do not require a lever mechanism or push bar. In educational settings, Q500 deadbolts are regularly found on administrative offices, equipment rooms, and faculty-only areas where access is controlled by key rather than by credential reader. In healthcare facilities, the Q500 serves staff-only rooms and pharmaceutical storage areas where keyed entry is required for compliance and security.

Cylinder replacement frequency on Q500 deadbolts varies by application. In high-turnover institutional environments, cylinders are typically replaced or rekeyed on a scheduled maintenance cycle to address key control drift from lost or unaccounted keys. In lower-turnover government and educational settings, cylinder replacement is more commonly triggered by physical wear, key compromise, or a change in occupancy. Knowing the pin count and finish in advance shortens the repair cycle significantly, since a pre-stocked cylinder can be installed in minutes on-site rather than requiring a factory order.

Security Parts stocks all 20 Falcon Q500 deadbolt cylinders across the 5-pin, 6-pin, and 7-pin configurations. Same-day shipping on stocked components. Call 845-935-0301 for pre-order compatibility support if you need help matching the pin count or finish to the installed deadbolt.

For Falcon lever lock cylinder parts, see the Falcon Q330 parts guide, which covers key-in-lever cylinders, latch bolts, spring cages, and lever trim for the Q330 cylindrical lock series. For OEM versus aftermarket guidance on Falcon hardware, see the OEM vs aftermarket commercial door hardware guide. For applications in healthcare, government, and educational settings where Q500 deadbolts are commonly specified, see the healthcare door hardware guide, the government buildings hardware guide, and the universities and colleges door hardware guide.

About the Author

This guide was written by the Security Parts team, a commercial door hardware specialist serving locksmiths, facilities managers, general contractors, and institutional maintenance teams since 2001. Security Parts stocks the complete Falcon Q500 cylinder catalog across all pin count and finish configurations, with same-day shipping on stocked components and pre-order compatibility support at 845-935-0301.

Quick Answer

The LCN 4010T is a template arm door closer that uses a concealed slide track on the door face instead of a standard exposed arm. Before ordering any LCN 4010T parts, confirm these key points:

• 4010T vs 4010: The 4010 is a standard arm surface closer. The 4010T uses a template arm track configuration. The two products have completely separate part catalogs. Parts are not interchangeable between them.
• Track variant: Four track options are stocked: 3038 (standard), 3038H (hold-open), 3038B (standard with bumper), 3038HB (hold-open with bumper). Match the track to the door function before ordering.
• Roller match: The 3034 standard roller goes with standard tracks. The 3034HO hold-open roller goes with hold-open tracks. A mismatched roller defeats the hold-open function.
• 3064H vs 3054: The 3064H is a combined hold-open clip and roller. The 3054 is the clip only. If the roller is also worn, the 3064H replaces both in one part.
• Double egress: Doors that swing both directions need the 3077DE track arm and the 78DE main arm and tube. Standard arms only swing one way.
• 37 LCN 4010T parts are stocked at Security Parts across all arm, track, roller, hold-open, cover, and screw pack configurations.

Call 845-935-0301 before ordering if you need compatibility confirmation.

What the LCN 4010T Is

The LCN 4010T is the AutoTemplate version of the LCN 4010 Series door closer. The T suffix designates the template arm (track arm) configuration, where the closer spindle connects to a track arm that slides inside a rail mounted on the door face. This keeps the arm mechanism closer to the door plane and reduces the clearance needed at the top of the door compared to a traditional exposed parallel arm.

The 4010T is commonly used in commercial and institutional applications where a standard exposed arm would create a clearance or aesthetic problem, or where the door is subject to regular parallel arm contact. The track arm system is more mechanically protected than an exposed parallel arm because the roller travels inside the rail rather than pivoting freely in space.

The 4010T is a completely separate product from the standard arm 4010. If the closer body at your installation has a slide rail mounted to the door with a roller running inside it, you have a 4010T. If the arm pivots freely between the closer body and the door surface without a rail, you have the standard arm version. The two products have separate part numbers, and no component crosses over between them. For parts relating to the standard LCN 4010 and other 4000 Series surface closers, see the LCN 4000 Series parts guide. For the companion AutoTemplate guide covering the 4050AT closer, see the LCN 4050AT parts guide.

LCN 4010T Track Arms

LCN 4010T-3077T Standard Track Arm. View product page and order.

The track arm is the mechanical link between the closer spindle and the track roller. It converts the rotational output of the closer body into the linear sliding motion that controls the door arc. Two track arm configurations are stocked for the 4010T.

4010T-3077T: Standard Track Arm

The 4010T-3077T is the standard single-direction track arm for doors that swing in one direction only. It connects the closer spindle to the track roller at the door end. Replace when the arm tube is bent, the spindle connection is stripped and tightening does not hold, or the arm has separated from the roller during operation.

4010T-3077DE: Double Egress Track Arm

The 4010T-3077DE is the track arm for doors that swing in both directions. Double egress openings are common in healthcare corridor applications and in institutional settings where traffic approaches from both sides. The 3077DE must be paired with the 4010T-78DE main arm and tube and the 4010T-82 rod. Standard arm components do not work in a double egress configuration.

Arm Screws: 159 and 83H

Two arm screws are stocked for the 4010T and they serve different attachment points.

• 4010T-159 arm screw: The primary screw that secures the track arm to the closer spindle at the standard attachment point. Replace when the arm is loose at the spindle and tightening does not restore a secure connection.
• 4010T-83H H-arm screw: Used when the installation uses an H-arm bracket configuration to mount the track arm on a parallel arm bracket rather than directly onto the spindle. Confirm the installation type before ordering. Ordering the 83H for a standard spindle connection, or the 159 for an H-arm bracket, will result in a non-fitting part.

LCN 4010T Track Assemblies

LCN 4010T-3038 Standard Track. View product page and order.

The track is the rail mounted to the door face that guides the roller as the door swings. It is the most commonly replaced component after the roller on high-cycle installations. Four variants are stocked, each serving a different operational requirement.

Track Variant Selection Table

The bumper variants cushion the roller at the fully open position, which reduces impact noise and mechanical stress when the door reaches its open limit. Specify a bumper track on doors that contact a wall or a door stop with enough force to produce noise. Additional track hardware:

• 4010T-169 track bumper: A standalone bumper replacement for an existing track that has lost or damaged its original bumper cushion.
• 4010T-73 end cap: The cap at the terminal end of the track rail that prevents the roller assembly from traveling beyond the track boundary.
• 4010T-425 roller lock screw: Secures the roller assembly within the track after installation. Replace when the roller is moving laterally inside the track between service visits.

LCN 4010T Track Rollers

LCN 4010T-3034 Track Roller. View product page and order.

The track roller is the highest-wear component on most 4010T installations. It contacts the track rail on every cycle and degrades through friction over time. Two roller types are stocked and must match the track type installed.

• 4010T-3034: Standard track roller. Use with the 4010T-3038 and 4010T-3038B standard tracks only.
• 4010T-3034HO: Hold-open track roller. Use with the 4010T-3038H and 4010T-3038HB hold-open tracks only. This roller includes the engagement geometry that allows the hold-open clip to arrest the arm at the fully open position.

A standard 3034 roller installed in a hold-open track produces a door that still closes but no longer holds at the open position. On hold-open function failures, check the roller type before replacing the track or the clip. If the installed roller is a 3034 in a hold-open track, that is the complete failure cause.

Hold-Open Components: 3064H vs 3054

LCN 4010T-3064H Hold-Open Clip and Roller. View product page and order.

Two hold-open components are stocked for the 4010T and they are frequently confused. Ordering the wrong one is the most common wrong-part return on 4010T hold-open repairs. The distinction is straightforward once you know what each part contains.

4010T-3054: Hold-Open Clip Only

The 4010T-3054 is the hold-open clip without a roller. It clips onto the existing roller to engage the hold-open notch in the 3038H or 3038HB track. Order the 3054 when the hold-open function has failed but the existing roller is still in good condition and does not need replacement. This is the lower-cost repair when the roller itself has not worn through.

4010T-3064H: Combined Hold-Open Clip and Roller

The 4010T-3064H replaces both the hold-open clip and the roller in a single assembly. Order the 3064H when the hold-open function has failed and the roller is also worn or damaged. On high-cycle doors where both components fail at similar rates, installing the 3064H as a single-part replacement is more efficient than sourcing the clip and roller separately. The 3064H is also the correct part if you cannot determine whether it is the clip, the roller, or both that have failed.

Quick Reference: 3054 vs 3064H

Mounting Plate and Additional Hardware

• 4010T-18 plate: The mounting plate for the 4010T closer body. Replace when the plate is bent or when mounting holes have stripped and the closer body cannot be securely anchored.
• 4010T-82 rod: The connecting rod used in double egress configurations between the main arm assembly and the track arm.
• 4010T-141-2 plug: Fills unused mounting holes in the closer body to prevent debris ingress. Replace when plugs are missing from the housing.

Covers and Finish Hardware

• 4010T-72MC metal cover: The heavy-duty metal closer cover for high-traffic and abuse-prone applications. Specified where the standard plastic cover would not withstand repeated contact or forced entry attempts against the closer body.
• 4010T-72 standard cover: The standard plastic cover for normal commercial applications. Replace when cracked, broken, or no longer clips securely to the body.
• 4010T-73 end cap: The cap at the open end of the track that retains the roller inside the track travel boundary.
• 4010T-31 cover screw: The fastener that secures the cover to the closer body. Replace when the cover is loose and the existing screw has stripped.

Screw Pack Selection Guide

The 4010T uses different screw packs depending on the installation configuration (standard or hold-open) and the substrate the closer and track are mounted to. Thirteen screw pack variants are stocked. Selecting the wrong pack is the most common fastener mismatch on 4010T service calls.

Complete LCN 4010T Parts Reference

What Fails First on the LCN 4010T

Most 4010T service calls on high-cycle doors follow one of three failure patterns. Knowing which component typically fails first saves time before ordering.

• Track roller: The most frequently replaced component on heavy-use installations. Roller wear produces a grinding or clicking sound as the door swings, and the arm may skip or catch inside the track. On high-cycle institutional doors, inspect the roller first before replacing the track or the arm.
• Hold-open clip: On doors held open for extended periods throughout the day, the hold-open clip wears through before the roller does. The door will close on its own when it should hold open. Replace the clip (3054) or the combined clip-and-roller assembly (3064H) depending on roller condition.
• Arm screw: The arm screw (4010T-159 or 4010T-83H depending on installation type) can loosen on doors subject to forced or rapid opening. A loose arm screw allows the arm to slip on the spindle, which produces a clicking sound at the start of the opening cycle and eventually allows the arm to separate from the spindle under load. Tighten or replace before assuming the arm tube itself has failed.

Where to Source LCN 4010T Parts

Security Parts stocks all 37 LCN 4010T parts across track arms, tracks, rollers, hold-open components, mounting hardware, covers, and all 13 screw pack configurations. Same-day shipping on stocked components. Call 845-935-0301 for pre-order compatibility support if you are unsure which arm screw, screw pack, or hold-open component applies to your installation.

For the companion LCN 4050AT template arm guide covering the 4050AT closer body, see the LCN 4050AT parts guide. For broader LCN door closer parts coverage including the 4040XP, see the LCN 4040XP parts guide and the door closers parts guide. For help selecting the right LCN closer for a new installation, see the LCN closer selection guide and the door closer sizing guide. For installation and adjustment guidance, see how to install a commercial door closer and how to adjust a commercial door closer. For scheduled inspection and planned maintenance, see the commercial door hardware maintenance checklist.

About the Author

This guide was written by the Security Parts team, a commercial door hardware specialist serving locksmiths, facilities managers, general contractors, and institutional maintenance teams since 2001. Security Parts stocks the full LCN 4010T parts catalog across all arm, track, roller, hold-open, cover, and screw pack configurations, with same-day shipping on stocked components and compatibility support at 845-935-0301.

Quick Answer

The LCN 4840 is a pneumatic multi-door auto equalizer operator. Before ordering any LCN 4840 parts, confirm these key points:

• Model first: The 4840, 4810, and 4820 share similar part naming but are different models. Confirm the 4840 label is on the closer body before ordering. Parts between these models are not interchangeable.
• 3077CNS vs 3077SCNS vs 3077EDA: Three arm configurations exist. The 3077CNS uses a block-and-shoe cushion stop. The 3077SCNS uses a spring-based cushion. The 3077EDA is the extra duty arm for high-traffic applications. Choose based on what is installed and what failed.
• Pneumatic hinge (4840-460): This hinge carries the air line through the pivot point. If the equalizer function is slow or absent and tubing pressure is confirmed, the pneumatic hinge is the component to replace.
• Door loop kit (4840-459): Carries the flexible pneumatic line between the fixed frame and the swinging door. Replace when tubing is cracked, kinked, or function is inconsistent.
• 25 LCN 4840 parts are stocked at Security Parts across arms, hinges, adapters, covers, spacers, and screw packs.

Call 845-935-0301 for pre-order compatibility support before placing your order.

What the LCN 4840 Is

The LCN 4840 is a pneumatic multi-door auto equalizer operator designed to simultaneously control the opening force across multiple doors from a single compressed air source. It equalizes the opening resistance on doors along an accessible route so that a person using a wheelchair or mobility aid can open the door without encountering uneven or excessive resistance.

The 4840 is the multi-door version of the LCN pneumatic auto equalizer family. The 4810 and 4820 serve single-door applications. The 4840 is specified where a single pneumatic control point must manage several doors on the same accessible corridor simultaneously.

The 4840 is not an electric automatic opener and not a door closer in the traditional sense. It is a pneumatically powered force-equalizer. Its parts catalog reflects this: the key components are arms, a pneumatic hinge, a door loop kit, a spring cush block, and the mechanical accessories that support and cover the system. For the broader LCN auto equalizer family context and related sentronic products, see the LCN Sentronic and Auto Equalizer parts guide. For general LCN automatic door operator coverage, see the commercial door operators guide.

LCN 4840 Arm Configurations

LCN 4840-3077CNS CUSH-N-STOP Arm. View product page and order.

Three arm configurations are stocked for the LCN 4840. The arm connects the closer body spindle to the door panel and controls the opening arc. Selecting the wrong arm type is the most common ordering error on 4840 service calls.

4840-3077CNS: CUSH-N-STOP Arm

The 4840-3077CNS is the standard CUSH-N-STOP arm. It uses a rigid cush shoe and spring cush block assembly to provide a controlled cushioned stop at the fully open position. The cushion absorbs the final impact of the door reaching its open limit, reducing noise and mechanical stress on the frame. Replace when the arm is bent, the spindle connection is stripped, or the cushion stop no longer functions at the full open position.

4840-3077SCNS: Spring CUSH-N-STOP Arm

The 4840-3077SCNS is the Spring CUSH-N-STOP arm. It uses an integrated spring mechanism within the arm assembly for cushioning at the open position, rather than the separate block-and-shoe configuration of the CNS arm. The SCNS arm is specified when the installation requires spring-loaded cushion action. Confirm which arm is installed before replacing: the CNS and SCNS are not interchangeable.

4840-3077EDA: Extra Duty Arm

The 4840-3077EDA is the Extra Duty Arm, reinforced for high-traffic and high-abuse applications. If a standard CNS or SCNS arm has failed prematurely on a high-cycle accessible route entry, the EDA is the correct upgrade. Installing a standard arm on an EDA application will produce the same premature failure.

Arm Hardware: Arm Screw and Blade Stop Spacer

• 4840-159 arm screw: Secures the arm to the closer spindle. Replace when the arm is loose at the spindle and tightening the existing screw does not hold. A loose arm screw is responsible for a significant share of 4840 performance calls that initially appear to be arm failures.
• 4840-61 blade stop spacer: Adjusts the door open limit. Replace when missing or when the door is making contact with an adjacent surface before the arm reaches its natural stop position.

LCN 4840 Pneumatic Hinge: 4840-460

LCN 4840-460 Pneumatic Hinge. View product page and order.

The 4840-460 pneumatic hinge is a specialized hinge that carries the compressed air supply line through the door pivot point. A standard hinge cannot perform this function because the tubing cannot cross a hinge knuckle without crimping or breaking during door cycles. The pneumatic hinge has an internal air passage machined through the hinge barrel that allows air to flow continuously from the fixed frame to the moving door panel regardless of door position.

Replace the pneumatic hinge when:

• The auto equalizer function is slow or absent and the air supply pressure at the source has been confirmed as adequate
• The door loop kit tubing is intact and unobstructed
• Air pressure at the door panel side of the hinge is lower than at the frame side
• The hinge shows visible corrosion at the barrel that could be restricting the internal air passage

LCN 4840 Panel Adapter: 4840-419

LCN 4840-419 Panel Adapter. View product page and order.

The 4840-419 panel adapter is required on aluminum storefront and narrow-stile glass doors where the door bottom rail does not provide sufficient mounting surface for the standard 4840 closer body. The panel adapter creates the necessary clearance and mounting geometry between the closer body and the narrow door rail.

If a 4840 was installed without the panel adapter on a narrow-rail door and the arm geometry is incorrect or the closer body is contacting the door rail, confirm whether the panel adapter was included in the original installation before replacing other components.

LCN 4840 Door Loop Kit: 4840-459

LCN 4840-459 Door Loop Kit. View product page and order.

The 4840-459 door loop kit carries the flexible pneumatic supply line from the fixed door frame to the swinging door panel. Because the door pivots on its hinges, a rigid tube cannot connect the two sides. The door loop provides a coiled or looped flexible tube that extends and contracts smoothly with every door cycle.

The door loop kit is a wear component. On high-cycle accessible route entries, the tubing flexes thousands of times per year. Replace when:

• The tubing is visibly cracked, kinked, or hardened
• The equalizer function is inconsistent despite confirmed adequate air supply pressure
• Air leaks are audible or detectable at the door loop fitting connections
• The loop no longer returns to its rest position freely after the door closes

CUSH Components: Spring Cush Block and Cush Shoe Support

The CUSH-N-STOP arm assembly depends on two components that work together to cushion the door at the open position. They are separate parts with different failure modes.

• 4840-3080 spring cush block: The spring-loaded block inside the cush shoe that provides the primary cushioning action when the arm reaches the open limit. Replace when the cushion stop is no longer present at the fully open position, even though the arm itself is undamaged. A failed spring cush block allows the door to open to its limit without any cushioned resistance.
• 4840-30 cush shoe support: The structural bracket that positions and supports the cush shoe in the correct engagement geometry. Replace when the support is bent or cracked, which typically occurs after repeated hard-door-open impacts on installations with high opening force or where the door is being pushed against its stop repeatedly.

When diagnosing a failed cushion stop, start with the spring cush block (4840-3080) before replacing the arm. A failed spring cush block produces the same symptom as a worn arm (no cushion at the open position), but it is a far less expensive and quicker repair. If replacing the spring cush block restores the cushion stop function, the arm itself does not need replacement. Only replace the arm if the spindle connection is stripped, the arm tube is bent, or the cush shoe support bracket is cracked beyond use.

On installations where the cush shoe support (4840-30) is bent, inspect the door frame stop at the corresponding open-position contact point. A bent support bracket almost always indicates that the door has been repeatedly pushed hard against a physical stop. If the door stop position can be adjusted, do so before installing the new bracket, or the replacement will experience the same impact damage.

Spacers, Stand-Off, and Mounting Hardware

• 4840-201 fifth screw spacer: A mounting spacer used in certain 4840 installation configurations to provide clearance between the closer body and the door or frame face. Replace when the spacer is damaged or missing from the original installation.
• 4840-182 stand-off: A stand-off bracket that positions the closer body at the correct distance from the door surface. Required in installations where the door panel geometry creates a gap between the closer mounting position and the door face.
• 4840-124 plug: Fills unused mounting holes in the 4840 closer body. Replace when plugs are missing, which exposes the closer housing interior to dust and moisture.

Cover Components

• 4840-72MC metal cover: The heavy-duty metal cover over the 4840 closer body. Specified in high-traffic and abuse-prone accessible route entries. Replace when the cover is damaged, dented, or no longer clips to the body correctly.
• 4840-334 cover endcap: The endcap at the terminal end of the cover that closes the housing. Replace when missing or cracked.
• 4840-163 cover insert: The insert that fills the space between the cover body and the closer mechanism. Keeps the interior free of debris.
• 4840-31 cover screw and 4840-31L long cover screw: Fasteners that secure the cover to the closer body. The long version (31L) is used in installations with additional spacer or stand-off components that require a longer fastener reach.

Decals

• 4840-155-2 activation decal: The user-facing label that indicates how the door is activated. Required on accessible route doors where visual instruction must be provided to users approaching the door.
• 4840-155-1 caution decal: The safety decal that warns users of the door operation. Replace when faded, missing, or illegible. Accessibility compliance on ADA routes typically requires that safety decals remain legible.

Screw Pack Selection

Two screw pack configurations are stocked for the LCN 4840. Selecting the wrong pack for the substrate is the most common fastener mismatch on 4840 installations.

• 4840-TBWMS: Thru-bolt with wood and machine screw pack. Used when the 4840 is mounted to a wood substrate door or when the installation requires both wood and machine screws in the same configuration. The most common screw pack for standard 4840 installations.
• 4840-WMS: Wood and machine screw pack without thru-bolts. Used in installations where thru-bolt mounting is not required or not possible. Confirm the original installation method before ordering the replacement screw pack.

Complete LCN 4840 Parts Reference

Source LCN 4840 Parts at Security Parts

Security Parts stocks all 25 LCN 4840 parts across arms, pneumatic components, mounting hardware, covers, screw packs, and decals. Same-day shipping on stocked components. Call 845-935-0301 for pre-order compatibility support.

The LCN 4840 is commonly found in healthcare corridor entries, university accessible route doors, and government facility main entries where multiple doors on the same accessible path must be controlled simultaneously. A single pneumatic source on the 4840 equalizes the opening force across all connected doors, ensuring consistent compliance with ADA force requirements along the entire route. When one door in a 4840 multi-door system fails, confirm whether the failure is isolated to that door (arm, pneumatic hinge, or door loop) or system-wide (air supply, control unit) before ordering parts. A system-wide failure will not be resolved by replacing a single door component.

For the broader LCN auto equalizer and pneumatic operator catalog, see the LCN Sentronic and Auto Equalizer parts guide and the door operators parts guide. For general LCN door closer parts, see the door closers parts guide and the LCN 4040XP parts guide.

For OEM versus aftermarket guidance on LCN parts, see the OEM vs aftermarket commercial door hardware guide. For accessibility and ADA-compliant door hardware in healthcare settings, see the healthcare door hardware guide. For maintenance and inspection requirements, see the commercial door hardware maintenance checklist.

About the Author

This guide was written by the Security Parts team, a commercial door hardware specialist serving locksmiths, facilities managers, general contractors, and accessibility compliance consultants since 2001. Security Parts stocks the complete LCN 4840 parts catalog across all arm configurations, pneumatic components, mounting hardware, covers, and screw packs, with same-day shipping on stocked components and pre-order compatibility support at 845-935-0301.

Quick Answer

The LCN 4050AT is a heavy-duty door closer that uses an AutoTemplate overhead concealed parallel arm system. Before ordering any LCN 4050AT parts, confirm these four things:

• 4050AT vs 4050A: These are completely different products. The 4050A is a surface closer. The 4050AT uses a concealed overhead parallel arm track system. Their parts are not interchangeable.
• Track variant: Four track options exist: 3038 (standard), 3038H (hold-open), 3038B (standard with bumper), and 3038HB (hold-open with bumper). Match the track to the function the door requires.
• Roller match: The 3034 standard roller goes with standard tracks. The 3034H hold-open roller goes with hold-open tracks. A mismatched roller will prevent hold-open function from engaging.
• Double egress: If the door swings in both directions, you need the 3077DE track arm and 78DE main arm and tube. Standard arms only swing one way.
• 40 LCN 4050AT parts are stocked at Security Parts across all track, arm, roller, cylinder, cover, and hardware configurations.