A door closer is a mechanical device designed to automatically close a door after it has been opened. Door closers are required on many fire-rated doors to help prevent the spread of fire and smoke by ensuring doors remain securely closed when not in use.
Door closers use internal springs, hydraulic oil, cylinders, and adjustable valves to control the door’s closing and latching speed. In modern commercial, industrial, and institutional buildings, most pedestrian doors rely on mechanical door closers to provide safe, controlled operation and consistent closing performance.
Door closers are available from many of the industry's leading manufacturers, including:
LCN, Norton, Record, Yale, Falcon, Sargent, Corbin Russwin, Dormakaba, BEST Access Systems Etc.
