Remote Motorzed Balancng Damper 6 in dia For Nominal Duct Diameter 6 in Damper Application Balancing Number of Panels 1 Overall Height Not Applicable Overall Length 6 3/8 in Rough Opening Shape Round For Duct Shape Round Overall Width Not Applicable Frame Material Thickness 20 ga Blade Material Galvanized Steel Maximum Air Pressure 1 in wg Overall Diameter 5 7/8 in Rough Opening Length Not Applicable Rough Opening Width 6 in Damper Type Not Applicable