This galvanized metal round dryer duct is great for a wide range of applications, including residential, commercial, and industrial ventilation, suitable for kitchen hood, dryer hood, bathroom hood, factory ventilation, and chimneys. | Unique Bargains | | 4 x 20 Inch Round Dryer Duct, 2pcs Galvanized Steel Crimped Straight Air Vent Duct Extension Coupler Pipe Adapter | Silver | Best Buy