It is part of the Schlage 36-079 blocking-ring family, which is available in different ring lengths for different lock configurations. The 36-079-037 provides the 3/8-inch ring length required for applicable configurations. Selection should be based on the specific lock function, trim, cylinder configuration, and door thickness rather than the ring size alone.

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Manufacturer: Schlage
Part Number: 36-079-037
Product Type: Blocking Ring
Product Name: Blocking Ring, 3/8"
Ring Length: 3/8"
Primary Function: Blocking ring for Schlage mortise lock applications
Application: Schlage L Series and LV Series mortise lock applications requiring a 3/8" blocking ring
OEM Part: Yes