6"x 6" Ductboard R6 Insulated Register Box

10 In. X 10 In. to 8 In. Ceiling Register Box

Custom Built Ductboard Insulated Register Box 10x6 R6 Quantity with Registers

10 In. X 4 In. to 6 In. Universal Register Box

10 In. X 10 In. to 8 In. Ceiling Register Box

14 In. X 6 In. to 8 In. Universal Register Box with Flange Galvanized Steel

Three-Way Plastic Side Wall/Ceiling Register in White 10"w X 8"h for Duct Ope...

14 In. X 6 In. to 8 In. Universal Register Box with Flange