Duct Offset Start Collar
This offset duct start collar is used for transition from plenums (duct board or lined) or a flat surface to square duct. This offset duct start collar is available in size for starting side from 8” x 10” to 20” x 10” and for ending side from 8” x 8” to 24” x 8”, and more sizes available for customer request. These offset 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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