The steel fire door has good heat insulation and smoking effects, reducing the entry and diffusion of tobacco poisons, and avoiding the rapid death of trapped people due to the inhalation of toxic smoke.

https://ztfiredoor.com/13548.html

fire rated attic access hatch,aluminium external fire doors,дарҳои дохилӣ ба оташ тобовар,дари оташгиранда,дари пӯлоди аз сӯхтор тобовар,fire rated attic access hatch,нархи тафтиши дари сӯхтор,aluminium external fire doors,wide fire door,дари оташгиранда,дарҳои хурди оташнишонӣ,fire rated attic access hatch,fire door pocket door,fire resistant front door,дари оташгиранда,28 x 80 дари оташнишонӣ,aluminium external fire doors,рейтинги оташ дари дар девори 2 соат