Simplex L1011 - Combination Entry OnlyTough-as-nails combination lock from the leader in top of the line security solutions, dormakaba. dormakaba has been making high quality security products for over 100 years. The Simplex L1000 Series is a 3-hour UL/ULC fire rated stand-alone security lock that is weather resistant and certified for durability, as it complies with D.O.D (Dept. of Defense) 5220.22M. Entry is gained via a 1 to 5 digit code that is sequential. Vandal resistant, the Simplex locks have found widespread acceptance in high-traffic commercial, institutional, and government buildings. ADA compliant lock 100% Mechanical HEAVY DUTY push button lock Fully bump and pick proof lock Thousands of possible codes combinations Auto-locking; can be ordered with passage mode feature in Simplex L1031 & L1041 models HEAVY DUTY Latch-bolt with deadlocking plunger Covers existing standard ASA 161 door hole Fits left and right swinging doors All hardware and instructions included with order Low maintenance, no batteries or wires Fits nearly all hinged doors Backset: 2-3/4″ included (2-3/8″ available at checkout) How do I measure? Warranty: 3-year manufacturer