From Yale, the 77 Traditional Nightlatch brings classic styling to a well-established door security design. Key operated from the outside and fitted with a knob handle on the inside, it offers straightforward day-to-day access while keeping operation clear and familiar. A deadlocking snib function allows the latch to be held back when needed, or deadlocked internally for added control from inside the door. Designed with a 60mm backset (measured from the edge of the door to the centre of the keyhole), this nightlatch is supplied with a 1109 external cylinder. Key features - Classic styling inspired by the Original Yale Lock - Key operated from the outside - Knob handle operation from the inside - Deadlocking snib function to hold back the latch or deadlock internally - 60mm backset - Supplied with 1109 external cylinder