What is fire rated door

- Jul 05, 2019-

Fire rated door is made by steel and fireproof wooden board in the surface,the fillling with fireproof  material in the center,normal used polystyrene core,honeycomb core,miniral fiberboard.The biggest function of  fire rated door is to help to excaping time when the fire occurs.Reduce the fire  risk,because the fire rated door can stop fire for limited time.