GREENSEAM Collar W/Damper,8& Duct Size

Duct Collar w/Damper; For Nominal Duct Diameter 8 in; Material Steel; Overall Length 5 in; Material Thickness 24 ga; Weight 1.89 lb; Maximum Pressure Rating 3 in wc; For Duct Height 6 in; Shape Round; End Type Crimped; For Duct Width 8 in; Gas Appliance Category Not Applicable; Inlet Diameter 8 in; Damper Type Low Leakage; Inside Diameter 8 in; Flange Outside Diameter 1 in; Outside Diameter 8 in; Flange Inside Diameter 8 in; Color Silver; Outlet Diameter 8 in; Overall Height 6 in