Motorized Damper with Controller,4 in
Round Motrzd Damper wController,4 in, For Nominal Duct Diameter 4 in, Damper Application Motorized, Number of Panels 1, Overall Height 9 7/8 in, Overall Length 9 3/4 in, Rough Opening Shape Round, For Duct Shape Round, Overall Width 4 in, Blade Material Galvanized Steel, Overall Diameter 4 in, Rough Opening Length 3 1/2 in, Rough Opening Width 3.6 in, Damper Type Dynamic, Nameplate Voltage 24V DC, Rough Opening Diameter 3.