Mortice nightlatches 5784 - 5784 nightlatch with snib lock-backLocks for entrance doors where automatic locking is requi… 6785 - 6785 nightlatch without lock-backLocks for entrance doors where automatic locking is requi… 5785 - 5785 nightlatch with key lock-backLocks for entrance doors where automatic locking is requi… 6780 - 6780 nightlatch with key lock-back, non-deadlockingLocks for entrance doors where automatic locking is requi…