Best 9K37T14DS3626 Satin Chrome US26D Grade 1 Dormitory 9K Cylindrical Summit Style Lever Small Core IC Core Lockset, specially designed for Small Core Interchangeable Cores, core is sold separately. The Best 9k series locks have been tested to over five million cycles, exceeding ANSI grade 1 requirements by over five times. This lever features a 2-3/4" backset, it fits doors 1-3/4" or 2-1/4" doors, and it requires a 2-1/8" diameter across bore hole.

Dormitory: Deadlocking latchbolt operated by either knob or lever. Thumbturn inside throws deadbolt and automatically locks outside knob or lever. Anti-panic operation.