The structure of fireproof door includes the following 4 elements: fireproof board, door frame and door panel material, door closer.

https://ztfiredoor.com/20477.html

formica fire rated door,metal fire prevention door,ul standard fire rated steel door,fire rated double swing doors,ul fire door,formica fire rated door,supersize fire door,metal fire prevention door,office building door kick plate for fire door,fire rated double swing doors,security fire door,formica fire rated door,oversized fire door,metal fire prevention door,90 minute fire door,fire rated double swing doors,ul listed fire door