The steel fire door only needs to be pushed open by hand, and then it will be closed silently and automatically without any noise of collision, thus creating a quiet environment.

https://ztfiredoor.com/13762.html

fireproof steel door,fire rated doors menards,custom made fire doors,fireproof access panel,six panel fire door,fire rated louvre doors,fire access doors,custom made fire doors,emergency exit door price,fireproof steel door,fire rated attic hatch,six panel fire door,20 minute rated door,pre hung fire doors,fireproof steel door,custom made fire doors,32 inch fire rated door,six panel fire door