List of featured suppliers of DOOR CLOSERS Fire and Smoke Electro-Magnetic Hold Open on Building Products Index
A door closer, fire and smoke electro-magnetic hold open is a device that is used in buildings to ensure that doors can be securely closed. It operates using electro-magnetic principles to hold the door open when necessary, such as in the event of a fire, and then release to allow the door to close and prevent the spread of smoke and flames. This technology is a vital component of modern building safety and often required by building codes and regulations.