Blast Gate For Nominal Duct Diameter 6 in Body Material Cast Aluminum Overall Length 27 7/8 in Product Type Pneumatic Blast Gate Weight 7 lb Maximum Pressure Rating 2 434 in wc Blade Material Galvanized Steel Maximum Temperature Rating 300 Degrees F Nameplate Voltage 110/120V AC Number of Air Cylinders 1 Seal Material Not Applicable Maximum Operating Pressure -30 in wc Minimum Operating Pressure Not Applicable Minimum Pressure Rating 80 psi Overall Depth 1 7/8 in