Blast Gate For Nominal Duct Diameter 6 in Inlet Diameter 6 in Body Material Aluminum Overall Length 5 3/4 in Product Type Manual Blast Gate Weight 3.75 lb Maximum Pressure Rating 42 in wc Blade Material Galvanized Steel Maximum Temperature Rating 390 Degrees F Body Material Thickness 22 ga Overall Depth 5 3/4 in Overall Width 7 in Shape Rectangular Inside Diameter 6 in Color Silver Connection Type Clamp Together