The Yale 706 nightlatch is a modern style nightlatch with classic styling. The deadlocking snib function enables the latch to be held back or deadlocked internally. The nightlatch is key operation from the outside & has a knob handle for operation from inside. The 706 nightlatch has a 40mm backset, this is the measurement from the edge of the door to the centre of the keyhole. Locks with a 40mm backset are normally used where there is restricted space, such as on a narrow glas