21 All fire doors are 1 3/4" thick All fire doors are positive pressure rated (CAT. A) Except 20 Minute which can be made Cat B. Stile and rail construction to match non rated door designs Routered door design to match routed doors Can be made with raised or flat panels Stile & Rail Construction Intumescent Edge Intumescent Core Fire Door Max. Max. Max. Rating Thinkness Width Single Width Pair Height 20 Min. Cat A 1 3/4" 4' 0" 8' 0" 8' 0" 45 Min. Cat A 1 3/4" 3' 6" 7' 0" 8' 0" 60 Min. Cat A 1 3/4" 3' 6" 7' 0" 8' 0" 90 Min. Cat A 1 3/4" 3' 6" N/A 8' 0" High Quality Fire Rated QUALITY DESIGN FIRE RATED 20, 45, 60 and 90 Minute Fire Rated MDF Doors
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