The steel fire door can be closed automatically and quietly without any noise of collision by gently pushing it open, thus creating a quiet environment.

https://ztfiredoor.com/24637.html

fire door meatl,fire door accessories,price of fire rated doors,fire door fittings,fire rated door entry,fire rated door accessories,fire door meatl,fire door panic bar exit device,price of fire rated doors,fire rated door interior door,fire rated door entry,fire door controller,fire door meatl,fire door knocker,price of fire rated doors,fire rated door entry