12 X 12 X 10 Side Out Ceiling Register Box - HVAC Ductwork Sheet Metal - Indoor Comfort Supply
Oval Register Boxes - Oval Pipe & Fittings - Ductwork - Sheetmetal - Air Distribution
90° Oval Register Boot - Southwark Metal Mfg. Co.
IMPERIAL 10-in x 4-in x 4-in Galvanized Steel Straight Register Duct Boot in the Duct Boots department at Lowes.com
Miami Tech Inc. | Fiberglass Register Box
8" x 8 x 6-in Galvanized-Steel Ceiling Heat AC Register Grille Housing Duct Boot | eBay
Funnel Register Box - Southwark Metal Mfg. Co.
Ceiling/Basement Register Boot - DuctWorks
IMPERIAL 12-in x 6-in x 6-in Galvanized Steel 90 Degree Register Duct Boot in the Duct Boots department at Lowes.com
HVAC Insulated Ceiling Register Box, Vent Box Ceiling Vent Box | eBay
Joval - Joval 12 in X 6 in X 7 in Pre-Fabricated Metal R6 Insulated End Tap Register Box
12 X 6 X 6 Wall Air Register Box - Indoor Comfort Supply
14 In. X 6 In. X 8 In. 90 Degree Register Box With Flange - Walmart.com
Master Flow 10 in. x 6 in. to 6 in. 90 Deg. Register Box 90RB10X6X6 - The Home Depot
PH4 90 DEGREE REGISTER BOOT
Master Flow 10 in. x 4 in. to 6 in. Universal Register Box RB10X4X6 - The Home Depot
Miami Tech Inc. | R-4 Register Box
MasterFlow 10 in. x 4 in. Register Box Saddle Insulate ductwork L-RBS104 - Walmart.com
Square electrical register box 100x100x52mm - Cablematic
14 X 14 X 12 Ceiling Register Box - Indoor Comfort Supply
Master Flow 12 in. x 6 in. to 8 in. Insulated Register Box IRB12X6X8 - The Home Depot
12 x 6 Register Box w Flange -Optional Collar - Budget Air Supply & Equipment
Return Air Box / Register Boot 12" x 12" R6
