The surface treatment of steel fireproof door is electrostatic spraying (wood grain veneer is optional); The steel fireproof door has a good airtightness. It is closed in place and tightly, and will not leave a crack in the door so that the air conditioner and heater will overflow.

https://ztfiredoor.com/16337.html

commercial steel door replacement,hollow metal door with full lite,metal door for business,36 x 80 commercial steel door,36×80 commercial steel door,fire rated door 90 min interior hotel,commercial steel door replacement,commercial hollow metal doors,metal door for business,48 commercial steel door,36×80 commercial steel door,commercial hollow metal door frames,commercial steel door replacement,metal door company,36×80 commercial steel door,metal door for business