14 In. dia Galvanized Steel Fire Damper, Damper Application Fire, For Nominal Duct Diameter 14 in, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2000 fpm, Overall Height Not Applicable, Rough Opening Diameter 14 in, Rough Opening Shape Round, Fits Fan Diameter Not Applicable, For Duct Shape Round, Free Area 0.9 sq ft, Overall Width Not Applicable, Frame Material Thickness 20 ga, Overall Length 14 in, Connection Type Not Applicable, Frame Depth 14 in. This item has been restricted from sale in the following state (s): []