Case Height: 103 mm Case Depth: 72 mm Backset: 50 mm features: M2003 Mortice deadlock with snib Cylinder fitted with snib operation on inside to comply with fire regulations c/w 2 keys British standard 83621 and Insurance approved Suitable for doors 44 - 54 mm thick For thicker doors call our sales team Cylinder and key protected by patent 6 pin drill resistant cylinder Hook Bolt to prevent door being spread Exclusive coded key registration system by Banham High security 254 mm striker plate on door frame Saw resistant steel bolt Includes security escutcheon plates (to strengthen door) Steel