General description This polished brass mortice bathroom lock is designed for timber doors hinged on either side, with a maximum thickness of 54mm. It features a 76mm x 102mm case size and a backset of 57mm, which is the distance from the door edge to the center of the keyhole. The lock includes a reversible 11mm latchbolt operated by lever handles from either side, making it compatible with lightweight knobs or sprung handles. It is designed for use with turn and emergency release functions, allowing the deadbolt to be locked or unlocked from inside and outside with separate mechanisms (not included). The lock is finished with a matching polished brass strike plate and is suitable for doors requiring a high level of security. Technical specifications Finish: Polished Brass Case Size: 76mm x 102mm (3 inches) Backset: 57mm Centre distance: 57mm (from handle follower to keyhole) Follower size: 8mm square Turn follower size: 5mm Latchbolt: 11mm reversible bolt Material: Steel with black