Regularly produced fire doors have their own “numbers”. This number is very important. It not only describes the fire rating of the fire doors, fireproof materials and manufacturers and other information, but also has a logo recognized by the fire department.

https://ztfiredoor.com/21863.html

main door fire rated,sliding fire door for kitchen,fire core doors,best fire rated doors,fire door metal,fire rated swing doors,main door fire rated,iingcango zokuphuma ezingxamisekileyo zomlilo,sliding fire door for kitchen,double pocket fire doors,best fire rated doors,fd60 fire door 44mm,main door fire rated,stainless steel fire rated doors,fire access hatch,best fire rated doors,fire rated door 32×80,fire rated door replacement,sliding fire door for kitchen