... . Easy installation and very suitable for office doors.Standard five-latches: Back locking by pulling the handle upward.safe and security ... , feel natural. Complex structure is against damage. Mortise C 5 latches and Single latch all suitable. digital door lock Installation1.Installation ... the door.3.CE,MA,ISO9001,ANSI American standard,5 latches.Door thickness:35-55mm.4.Material of :Zinc alloy.5 ...