A door closer is a mechanical device that closes a door, in general after someone opens it, or after it was automatically opened.
A manual door closer stores the energy used in the opening of the door and releases it to close the door. To limit the speed at which the door closes, common door closers use hydraulic (oil-filled) dampers, although spring mechanisms may also be used. The speed at which the door closer closes the door is adjustable. In most cases the sweep speed and the latch speed of the door. The latch speed is the speed that the door travels in the last third to 10 degrees as it closes and is often set faster so that the door can properly latch closed. The sweep speed is the speed which the door travels at along the first two thirds of its travel and is often set slower than the latch speed. Door closers which provide this two-stage action and close doors at a determined rate are called ‘controlled’ door closers.
Different types of closers include: standard egress, hold open, fire rated, UL listed, surface mounted, floor mounted and concealed. Closer strength will vary based on the use (windy area, heavy door).
A properly sized door closer can be all that separates a functional, and secure, doorway, from one that is dysfunctional, and insecure. The best locks available are wasted if your door doesn’t close and latch properly every time. Talk to us about our full line of door closers, from top of the line LCN with a closer for every application, to versatile and inexpensive makes and models for residential/ apartment use.