Steel City 59361-1/2 Handy/Utility Outlet Box Extension Ring, Drawn Construction, 4-Inch Length by 2-1/8-Inch Width by 1-7/8-Inch Depth, Galvanized - Outlet Plates - Amazon.com
3" X 2" Switch Box Extension Ring - Walmart.com
Octagon Box Extension Ring, 15.8 Cubic Inches, 4 Inch Diameter x | Crescent Electric Supply Company
ReceptXtenders 2-Gang 3/4 in. Electrical Receptacle Box Extension Ring (5-Pack) HD50026 - The Home Depot
RACO 4 in. L x 2 in. W x 1-7/8 in. D Drawn Extension Ring with Eight 1/2 in. Knockouts, 1-Pack 665 - The Home Depot
Hammond Manufacturing - CS88EXT4 - Junction Box Extender Ring,4 in Box Depth Extension,8X8,Gray,For CS Enclosures - RS
Sigma Engineered Solutions Gray Metal Weatherproof New Work Standard Box Extender Exterior Electrical Box in the Electrical Boxes department at Lowes.com
Garvin Industries TBX-125 Masonry Box Extension Ring – Wirenco
Hubbell-Raco - Extension Ring: Steel - 31523764 - MSC Industrial Supply
Commercial Electric 1/2 in. Gray 4-Holes 4 in. Round Weatherproof Extension Ring WRE450G - The Home Depot
4 in. Square Extension Ring, Drawn, 1-1/2 in. Deep with Twelve 1/2 in. KO's: Electrical Boxes: Amazon.com: Tools & Home Improvement
ReceptXtenders 1-Gang 1/4 in. Electrical Receptacle Box Extension Ring (5/Pack) HD50002 - The Home Depot
Raco 2-1/8 In. x 4 In. x 1-7/8 In. Outlet Box Extension - Bliffert Lumber and Hardware
TayMac Corp SE450S 4 1/2 Inch Hole Rectangle Box Extension Ring | Quality Electrical Distribution (QED)
Crouse-Hinds by Eaton,Four Square Box, 1 1/2 Inch Depth, 1 Gang to 2 Gang, Extension Ring, Steel,TP422
SQUARE BOX EXTENSION RING | Edges Electrical Group
Raco® 653 Handy Box Extension Ring With Conduit Knockout, 11.5 cu-in, 1 Outlet, 8 Knockouts, Steel | Steiner Electric Company
RACO 8203 Electrical Box Extension Ring, 1 Gang, 22.5 Cu-in, 4 in L X W X 1-1/2 in D, Color - Electrical Boxes - Amazon.com
1/2" Octagon Box Ring Extension - - Amazon.com
5936112 59361 1/2 Steel City 1-7/8D Hndy Ext RNG W/1/2ko
Octagonal Junction Box Extension Ring - Kraloy Fittings
Appleton 30E12 :: 3-1/4" Octagon Box Extension Ring, 1-1/2" Deep, 1/2" Knockouts, Steel :: PLATT ELECTRIC SUPPLY
ReceptXtenders 1-Gang 3/4 in. Electrical Receptacle Box Extension Ring 5-Pack HD50006 - The Home Depot
SOU H4457 - Handy Box Extension Ring - BR Supply Inc
IHE Red Dot 1G Blank Extension Ring
Garvin SBEX Switch Box Adjustable Extension Ring (Sbex)
Pass & Seymour EXT-1 1-Gang 1 cu.in Plastic Stackable Wall Box Extension Ring | NorthEast Electrical
73171-1 - Steel City 73171-1 - 4-11/16" x 2-1/8" Deep Square Box Extension Ring, 1" Knockouts
