3-1/2" Round Pan Box Extension Ring, 1/2" Deep - Drawn, Fixture Earss2-3/4" O.C. | Southwire
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
Thomas & Betts 531711234 Steel City Extension Ring | Standard Electric Supply Co.
Circular Extension Ring 20mm - Marshall-Tufflex
Hubbell-Raco 653 Handy Box Extension Ring | Standard Electric Supply Co.
3-1/2 in. Octagon Extension Ring, Drawn, 1-1/2 in. Deep, Four 1/2 in. KO's | 111 | Raco
Southwire 4 in W x 1-1/2 in. D Steel Metallic Octagon Extension Ring with Two 1/2 in. KO's and Two 3/4 in. KO's 55151-S-UPC - The Home Depot
Slab Box Extension Ring - Kraloy Fittings
RACO Steel New Work/Old Work Box Extender Electrical Box in the Electrical Boxes department at Lowes.com
Steel City 531511234UB 4" Square Extension Ring, 1-1/2" Deep, 1/2" & 3/4" Knockouts, 21.0"° | Cooper Electric
4" Square Extension Ring, 1-1/2" Deep - Welded, W/Conduit KO's | Southwire
4-11/16" Square Extension Ring, 1-1/2" Deep - Drawn, W/Conduit KO's | Southwire
Steel City 4 in. 21 cu. in. Square Box Extension Ring 531511234-20R - The Home Depot
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
Appleton 4SSBESPL :: 4" Square Extension Ring, 1-1/2" Deep, Welded, Metallic :: PLATT ELECTRIC SUPPLY
1/2" Octagon Box Ring Extension - Amazon.com
Hubbell-Raco 207 :: 4" Square Extension Ring, 2-1/8" Deep, Welded, Metallic :: PLATT ELECTRIC SUPPLY
Extension tube - Wikipedia
Steel City 4-11/16 in. 2-Gang New Work Square Metal Electrical Box Extension Ring 73151 1/2 3/4 - The Home Depot
Sigma Engineered Solutions Metal Weatherproof New Work Box Extender Electrical Box in the Electrical Boxes department at Lowes.com
Galvanized Steel, 1 1/2 in Nominal Dp, Extension Ring - 1RVU4|203 - Grainger
Appleton 4SES :: 4" Square Extension Ring, 1-1/2" Deep, Drawn, Metallic :: PLATT ELECTRIC SUPPLY
Raco 8201 Square Extension Ring, Drawn, 4", 1-1/2" Deep with Twelve 1/2" KO"s, Gray: Electrical Boxes: Amazon.com: Tools & Home Improvement
Galvanized Steel, 1 1/2 in Nominal Dp, Extension Ring - 2DDA7|653 - Grainger
Steel City 53151 1/2 3/4 Pre-Galvanized Steel Square Box Extension Ring with 1/2-Inch and 3/4-Inch Knockouts - Ring Terminals - Amazon.com
TP564 | Eaton Crouse-Hinds series square extension ring | Specifications | Eaton
Extension Rings - Weatherproof Products
