Vent Boot Hanger, Boot Style Straight Boot, Collar Diameter 7 in, Collar Connection Height 7 in, Collar Connection Width 7 in, Material Steel, Compatible Register Height 4 in, Compatible Register Width 12 in, Duct Size 4 x 12 in, Cap/Collar Material Steel, Product Type Register Boot, Damper Type None, Standards Meets LEED IAQ 3.1 Credit, Includes Air Tight Foam Gasket, Drywall Mud Ring, Dust And Debris Cover