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90 minute rated door,20 minute fire rating,2 hour fire rated glass door

The steel fireproof door can be provided with windows, louvers, ventilation louvers, etc. as required. The steel fire door has a good airtightness, and it is closed in place and locked tightly, so that no cracks will be left in the door and the cooling and heating will overflow.

https://ztfiredoor.com/24775.html

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