Steel fire door door fan can be divided into three standards according to the different thickness, the higher the standard, the sound insulation of the fire door, heat insulation effect is better.

90 minutong fire rate na pinto,size 9×21 or 10×21 fire rated steel doors,rolling steel door fire rated,90 min na firerated door hinge,2 oras na pinto na may marka ng sunog,fire proof door,3 oras na pintuan ng apoy, mga pintuan na bakal na may marka ng sunog sa labas,90 minutong fire rate na pinto,120 minute fire rated doors,fire resistant doors,90 min na firerated door hinge,fire rated door frame,ul fire rated door,mga pintuan na lumalaban sa sunog,fire proof door,ecological fire door,90 minutong fire rate na pinto,puting 34 inch na fire rate na bakal na insulated na pinto, double leaf fire door,fire proof door,90 min na firerated door hinge