The Overly Extreme Protection fire door by is ideal for interior applications where UL fire ratings are required, according to the company. The door has been successfully tested to both UL 10B and UL 10C/UBC 7-2 test standards. Construction includes a fire-resistant core and perimeter stainless steel edge bands. Sizes include single 4-foot x 8-foot doors and double
8-foot x 8-foot pairs.
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