- 03
- Aug
Refurbished 90min Fire Doors
Fire doors are divided into Class A, Class B and Class C according to the fire rating. The fire resistance time of Class A fire doors is not less than 90 minutes. The filling material in Class A fire doors is generally perlite. The difference is only the thickness. The use of foam door core board, vermiculite fireproof board, MC composite material and other fireproof materials.