Duct Start Collar
This duct start collar is used for transition from plenums (duct board or lined) or a flat surface to square duct. This duct start collar is available in size from 8” x 8” to 24” x 10” and more sizes available for customer request. These duct start collar are made of 26 gauge galvanized sheet metal up to 12″ or 24 gauge galvanized sheet metal from 14″ to 24″.
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