The Yale No.1 and No.2 Rim Auto Deadlocking Nightlatch is a high security nightlatch that comes complete with a 6 pin brass cylinder. Finish: Polished Brass. Height 88mm, Width 64/84mm, Backset 40mm or 60mm. Bolt Throw 13mm. Automatically deadlocked when door is in the closed position. Particularly suitable for glass panel doors. This traditional high security Yale nightlatch features a convenient lever handle to operate the lock inside the property. The Automatic Deadlock is engaged when you close the door for instant security and the latch bolt can be held back temporarily with a snib button. Includes Yale rim cylinder operated by key from the outside with standard security components. The internal nightlatch handle can be locked from the inside with a key, ideal for use with wooden doors with large glazed panels. Supplied with two standard Yale keys and fixing pack. Features anti-card slip protection, preventing your lock from being vulnerable to this specialist technique that only requires a credit card sized piece of plastic. Weight: 1.06 Pounds. Manufacturer: Yale.