Motorized Damper, For Nominal Duct Diameter 6 in, Damper Application Control, Number of Panels Not Applicable, Overall Height 11 in, Overall Length 6 in, Rough Opening Shape Round, For Duct Shape Round, Overall Width 6 in, Frame Material Thickness Not Applicable, Blade Material Galvanized Steel, Maximum Air Pressure 4 in wc, Overall Diameter 6 in, Rough Opening Length 6 in, Rough Opening Width 6 in, Damper Type Dynamic, Maximum Air Velocity 3000 fpm, Nameplate Voltage Not Applicable