Duct Collar w/Damper For Nominal Duct Diameter 10 in Material Steel Overall Length 5 in Material Thickness 24 ga Weight 2.94 lb Maximum Pressure Rating 3 in wc For Duct Height 6 in Shape Round End Type Crimped For Duct Width 10 in Gas Appliance Category Not Applicable Inlet Diameter 10 in Damper Type Low Leakage Inside Diameter 10 in Flange Outside Diameter 1 in Outside Diameter 10 in Flange Inside Diameter 10 in Color Silver Outlet Diameter 10 in Overall Height 6 in