10x6 wh bsboard register. All-steel construction. Multilouver damper directs heat along floor. 1/3" vertical face bars 7/8" baseboard extension to mount flush with baseboard. White. Type: Baseboard, Material Type: All Steel, Pattern: Multilouver, Duct Width: 6", Duct Length: 10", Color: White No. AB3BRWH126: Type: Baseboard, Material Type: All Steel, Pattern: Multilouver, Duct Width: 6", Duct Length: 12", Color: White