Fire door frame gap kits for excessive clearance at the head, jambs, and frame face. GAP90 GapGuard stop-extender kits close gaps over 1/8 inch up to 9/16 inch (180-minute hollow metal / 90-minute wood as printed on GAP90). Also GAP90N narrow soffit, 9200 / 9750 intumescent, and FP180 / FR180 frame patch and repair.
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