Lockwood 3772 Universal Mortice Lock with Locking Adaptor 3772TSS Mortice Lock provides more security on exterior doors that have windows. (e.g. When intruders attempt to break into a building through a window, the key lock on the inside of the door will stop them from entering) Mortice Lock Function - where the deadbolt locks by a key on both the exterior and interior of the lock. The latch is activated by turning the key or lever handle if fitted. Features: Easy red/green function setting All lock settings are made from under the faceplate allowing for simple in-door configuration Standard primary locks include anti-lockout and holdback capabilities Improved cylinder functions including lock/unlock and retract latch as standard Reduced range of cylinder cams and turn adaptors relative to other commonly available commercial cylinder mortice locks Specifications: Door Thickness: 32mm - 50mm Backset: 60mm Finish: Satin Stainless Steel