The interior of the door leaf of the steel fire door is filled with a new type of environmentally friendly flame retardant and heat insulation material, which is non-toxic and harmless to the human body. It is a steel fire door with certain fire resistance composed of fireproof hardware accessories.

https://ztfiredoor.com/11937.html

fire rated internal sliding doors,90 minute fire rated interior doors,aluflam fire rated doors,1 hour fire rated door with vision panel,fire rated metal access panel,90 minute fire rated interior doors,fire resistant pocket doors,garage fire door cost,fire rated internal sliding doors,fire rated sectional overhead door,1 hour fire rated door with vision panel,metal fire door cost,fire rated internal sliding doors,fire rated double egress doors,vision panel fire doors,1 hour fire rated door with vision panel,fire rated access panel doors,90 minute fire rated interior doors