Butterfly Dampers For Nominal Duct Diameter 6 in Overall Length 8 in Product Type Butterfly Valve Weight 2.4 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 6 in Outlet Diameter 6 in Overall Height 6 in Overall Width 6 in Color Silver Connection Type Clamp Together For Media Type Dust Environment Type Dusty Material Fabrication Rolled Edge