The interior of the steel fire door leaf is filled with new environment-friendly flame retardant and thermal insulation materials.

https://ztfiredoor.com/13739.html

24 inch fire rated door,pyropanel fire doors,fire shutter with egress door,fire proof doors for sale,decorative fire rated doors,28 fire rated door,24 inch fire rated door,double fire doors interior,fire proof doors for sale,2 hour rated door,decorative fire rated doors,narrow fire door,door fire rating in 1 hour wall,fire proof doors for sale,fire rated door with vision panel,24 inch fire rated door,fire rated hollow metal door,decorative fire rated doors