Lockwood Door Lock 100 Rim Night Latch 100NOCYL Nightlatch is a lock commonly found on home front doors they are mounted to doors that open inwards and mounted to the inner surface of the door. When the door is closed the night latch automatically latches the door shut. Nightlatch Function - is lock that is fitted on the surface of a door; it is operated from the exterior side of the door by a key and from the interior (i.e. "secure") side of the door by a knob. Features: Opened by key from outside and by turn knob inside Bolt may be held back by turning knob in clockwise direction Can be keyed alike to other Lockwood door locks Reversible 13mm projection bolt Supplied less cylinder Supplied boxed With no internal snib Specifications: Material: zinc alloy Case: Wide:92mm Height: 64mm Projection: 43mm Backset: 60mm Door Thickness: 28-45mm Finish: Brown