Steel fire door because it can be filled with a variety of fire prevention materials, in having a good fire and smoke prevention capacity at the same time, but also has a very good sound insulation effect. Steel fire door is relatively compared with wood fire door, the main structure is stable, all cold rolled steel material is not easy to be man-made damage.

https://ztfiredoor.com/15453.html

30 x 80 20 minute fire rated door,20 minute fire rated garage door,fireproof door to garage,commercial fire rated double doors,front door fire rated,fire proof door cost,30 x 80 20 minute fire rated door,30 x 30 fire rated access door,fireproof door to garage,front door fire rated,fire resistant steel door,30 x 80 20 minute fire rated door,fire rated sliding door residential,fireproof door to garage,doors fire doors,front door fire rated