Duct Coupler, For Nominal Duct Diameter 4 in, Fabric Material Neoprene, Fold Type Not Applicable, Inlet Diameter 4 in, Product Type Gasketed Coupler, Application Commercial, Residential, Overall Length 42 in, Weight 0.84 lb, Material Steel, Maximum Pressure Rating 30 in wc, Material Thickness 24 ga, Overall Height 4 in, Outlet Diameter 4 in, Maximum Airflow Not Applicable, Overall Width 4 in, Shape Straight, Seal Material Polyethylene, Duct Compatibility Round Spiral, Color Silver