Fire shutter doors are usually located in large openings in the building, in the event of a fire fire and prevent smoke from spreading.The door is open and closed and can be equipped with different automatic control systems.The fire door can cut off the fire source in case of fire, and provide effective time for people to escape.However, faulty fire doors will not only block the fire, but also increase the fire, so the quality of the shutter door is very important.When the shutter door is lowered to a certain height, it will stop falling.This is to prevent future escapees from getting trapped in the shutters.If the lower shutter door falls completely, survivors are trapped inside, causing unnecessary casualties.Fire shutter door fire time and temperature limit is strictly controlled, so in the selection and purchase shutter door, must choose high quality and guaranteed fire shutter door.Install the main door fan with electric rolling door fan.Make sure the electric shutter door is integrated into the wall and is closed properly, then paint the holes and walls.After finishing the painting, the door gap should be smooth, the electric shutter should be free to open the window, and not too tight, too loose and rebound.