Butterfly Dampers, For Nominal Duct Diameter 9 in, Overall Length 13 in, Product Type Butterfly Valve, Weight 4.85 lb, Maximum Pressure Rating 42 in wc, Maximum Temperature Rating 225 Degrees F, Material Thickness 22 ga, Material Steel, Minimum Pressure Rating 2 in wc, Shape Round, Inside Diameter 9 in, Outlet Diameter 9 in, Overall Height 9 in, Overall Width 9 in, Color Silver, Connection Type Clamp Together, For Media Type Dust, Environment Type Dusty, Material Fabrication Rolled Edge