- 22
- Jan
ul steel fire door with panic push bar,3 hr fire door,white 34 inch fire rated steel insulated door
Steel fire doors have excellent sound insulation and thermal insulation properties. Steel fire doors can save energy, electricity and heating. The steel fire door has good airtightness. Once it is closed, it will be tightly closed, and it will not leave the door seam and cause the air-conditioning and heating to overflow.
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