Lock case 4960

Deadlocking can be controlled by a sliding snib on the forend of the lock case. When the snib is in its up position, the door will deadlock when closed and can only be opened by a key or by the thumbturn. When the snib is in its down position, the bolt is locked inside the lock case. The lock case works with the 4662 striker plate. Mortice standard: SFS 5209