8 In.dia GSteel Manual Control Dampr, Damper Application Control, For Nominal Duct Diameter 8 in, Frame Material Steel, Number of Panels 1, Maximum Air Velocity 3000 fpm, Overall Height Not Applicable, Rough Opening Diameter 8 in, Rough Opening Shape...
8 In.dia GSteel Manual Control Dampr, Damper Application Control, For Nominal Duct Diameter 8 in, Frame Material Steel, Number of Panels 1, Maximum Air Velocity 3000 fpm, Overall Height Not Applicable, Rough Opening Diameter 8 in, Rough Opening Shape...