Door Chain Locking device where one end of the chain is attached to the doorjamb or the wall with the other end sliding into a holder on the door. This type of lock allows the door to be opened slightly without being unlocked. Door Check Device that slows the closing of a door. Door Chimes Doorbell, which makes the sound of, chimes ringing when it is used. Door Closer Device that automatically pulls a door, closed at an adjustable speed.
Door closers can be single acting, double acting, overhead or floor.
Door, Exterior Door, which is constructed to be able to be exposed to the outside elements on one or both sides. Door, Fire A door designed to resist the passage of fire. Fire doors are rated by the amount of time they can resist the penetration of fire with the time ranging from one-half to three hours. Fire doors are used to close openings in firewalls, so that the door area is no more vulnerable to fire than the wall. Door, Flush Door with a thin plywood facing over a core and frame of wood or wood particleboard.