Sargent the keypad operated products 10 line cylindrical lock. Its unique design provides uniformity when used with other Sargent locks at a facility. The KP products offer economical, standalone access control solutions. Certified ANSI A156.2 Series 4000 - Grade 1. UL listed to USA and Canadian safety standards Listed for 3 hour doors (double doors require 41 - option). 2-3/4-inches (70 millimeter) backset standard. Non handed. Heavy duty lever spring return rose assembly. Steel spacer bushing and extended one-piece bearing sleeves. Steel mounting studs. 3 Through-bolt position combinations. Key override standard. Includes code to activate horn when keypad buttons are pushed. For 1-3/4-inches (44 millimeters) thick doors standard. Lever inside always retracts latch bolt. Key outside retracts latch bolt. Outside lever rigid except when in passage mode or valid user code entered. 4-7/8-inches Curved lip strike #808.