High Quality Insulated Fire Proof Steel Door Fire Rated Roller Shutter
||steel smoke curtain fire rated roll up door
||treated with galvanizing
|Refractory limit time
|Opening and closing speed
||Water spray system
||Commercial Building, Industrial Building, such as hotel, underground garage
Classification of fire shutter doors
Fire shutter doors have many kinds of classification.
Can be classified according to the strength of wind pressure, according to the number of the curtain surface, according to the open mode classification, according to the classification of fire resistance.