DUCT REDUCER 24X8-20X8 F1S12 28GA.

24 x 8 - 20 x 8" Galvanized Steel Rectangular Flat Duct Reducer, 28 ga
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Flat Elbow, Galvanized Steel, 90 Degree Angle, 6 in. Duct, Package Quantity: 40 Carton, 30 ga Gauge (metal), Oval Vent Duct