40mm Backset Designed for those applications requiring an internal locking handle. Suitable for both exterior and interior doors and recommended for glass panelled doors. Standard width door lock. External: 6 pin key to unlock. Internal: Bolt can be held back by push button or locked in either the withdrawn or extended position by a turn of the key in the handle. Bolt automatically locked against end pressure when the door is closed with two position auto-deadlocking for increased security. Lever handle can be locked prior to closing door and entry can always be gained by key from the outside cylinder. The styling will enhance the appearance of any door and the ergonomically designed handle is extremely easy to operate, especially by the elderly or infirm. Extended striking plate strengthens the door jamb. Lockable handle prevents reaching in and opening the door. Supplied in Dark Metalic Grey, brasslux and chrome finish available. 2 keys supplied Kitemarked to BS3621 : 2007