Photo 1 of 3-1/4 in. x 10 in. Rectangular to 6 in. Round Galvanized Steel Duct Transition

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Photo 1 of 3-1/4 in. x 10 in. Rectangular to 6 in. Round Galvanized Steel Duct Transition Photo 2 of 3-1/4 in. x 10 in. Rectangular to 6 in. Round Galvanized Steel Duct Transition