Karp KHD Duct Door 24" x 24"
Karp KHD Duct Door 24" x 24" The Karp KHD Duct Door is furnished with hinges and cam latch, and the frames are easily attached to duct with notched knock-over tabs. On sizes 12" x 12" and smaller, the door is 24 gauge galvanized steel. On sizes 14" x 14" and larger, the door is 22 gauge galvanized steel. On all sizes the frame is 22 gauge galvanized steel, and the hinge is aluminum, continuous piano. The door is filled with 2" thick fiberglass insulation compressed into 1". R factor = 7.7. Gasketing between door and frame is 1/2" thick by 1/8" wide closed cell neoprene gasketing. The back of the frame has 5/8" notched knock-over edges. The Karp KHD Duct Door comes with zinc plated steel cam latches that are self-tightening and hand operated. * Dimensions are H x W
