The main advantage of fire doors is to maintain the integrity and thermal insulation of the door body for a certain period of time.

https://ztfiredoor.com/18947.html

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