SS Motrzd Vent Dampr,12.2 In.L 15 In.H 12.2 In.W, For Nominal Duct Diameter 10 in, Damper Application Vent, Number of Panels Not Applicable, Overall Height 14 7/8 in, Overall Length 10 1/8 in, Rough Opening Shape Not Applicable, For Duct Shape Not Applicable, Overall Width 12 1/8 in, Frame Material Thickness 0.024 in, Blade Material Stainless Steel, Maximum Air Pressure Not Applicable, Overall Diameter 10 in, Rough Opening Length Not Applicable, Rough Opening Width Not Applicable