Yale Deadlocking Security Night Latch Lock, Brass - 60mm Backset

High Security Double Locking Night Latch with deadlock function from the outside using a reverse turn of the key. Inside handle can be deadlocked by a reverse turn of the key in the outside cylinder after closing the door Snib to deadlock or hold back the latch deadlocked by the snib button internally, making the lock inoperable by key or handle Anti-bump Supplied with 1109 cylinder 2 Keys supplied