View 1 of 1 PC 3-1/4" x 10" x 5'', 5" Rectangular to Round Duct Galvanized Steel Transition for Connecting Duct Fittings

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View 1 of 1 PC 3-1/4" x 10" x 5'', 5" Rectangular to Round Duct Galvanized Steel Transition for Connecting Duct FittingsView 2 of 1 PC 3-1/4" x 10" x 5'', 5" Rectangular to Round Duct Galvanized Steel Transition for Connecting Duct Fittings