Mortise Dead Lock for Steel Door is made of quality grade material that ensures long lasting usage. The Mortise Dead Lock is mainly designed for use on 44mm standard to 57mm single wood or hollow metal doors. The Mortise Dead Lock is suitable for residential, commercial, institutional and retail buildings to provide moderate safety. Mortise Dead Lock for Steel Door is offered in a compact design that facilitates ease of installation and has no exposed mounting screws on outside and inside trims.