The fire protection time of fire doors is 60/90/120min. Fire doors are usually divided into wooden fire doors, steel fire doors, stainless steel fire doors, fire glass doors and fire entrance doors, whether they are wood, steel or other materials. There are three grades, A, B,and C.

https://ztfiredoor.com/16383.html

2 hour rated access door,ລາຄາປະຕູໄຟ,180 ນາທີໄຟຈັດອັນດັບປະຕູ,fire doors front door,ປະຕູໄຟ 60 ນາທີດ້ວຍແກ້ວ,2 hour rated access door,ປະຕູໄຟສອງເທົ່າ,180 ນາທີໄຟຈັດອັນດັບປະຕູ,rated access doors,fire doors front door,milcor fire rated access doors,fire rated attic access hatch,180 ນາທີໄຟຈັດອັນດັບປະຕູ,ປະຕູຊ່າງຫັດຖະກໍາລະດັບໄຟ,fire doors front door,ປະຕູໄຟໄຫມ້ສໍາລັບຫ້ອງ furnace,2 hour rated access door