Slab Box Extension Ring - Kraloy Fittings
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
Steel City 4 in. 21 cu. in. Square Box Extension Ring 531511234-20R - The Home Depot
Classic Hopper Extension Ring
Steel City 531511234UB 4" Square Extension Ring, 1-1/2" Deep, 1/2" & 3/4" Knockouts, 21.0"° | Cooper Electric
Galvanized Steel, 1 1/2 in Nominal Dp, Extension Ring - 2DDA7|653 - Grainger
Extension tube - Wikipedia
RACO Steel New Work/Old Work Box Extender Electrical Box in the Electrical Boxes department at Lowes.com
RACO 2-Gang Steel New Work/Old Work Box Extender Electrical Box in the Electrical Boxes department at Lowes.com
Appleton 4SES :: 4" Square Extension Ring, 1-1/2" Deep, Drawn, Metallic :: PLATT ELECTRIC SUPPLY
Hubbell-Raco 653 Handy Box Extension Ring | Standard Electric Supply Co.
RACO 187 Drawn Extension Ring, 22.5 Cu-in, 4 in L X W X 1-1/2 in D, Product Specific - Amazon.com
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
Steel City 53151-1/2-3/4 4 x1-1/2 Inch Steel Square Extension Ring with 1/2 and 3/4 Inch Knockouts | Cooper Electric
Thomas & Betts 531711234 Steel City Extension Ring | Standard Electric Supply Co.
Appleton 40E12 :: 4" Octagon Box Extension Ring, 1-1/2" Deep, 1/2" KOs, Steel :: PLATT ELECTRIC SUPPLY
4" Square Extension Ring, 1-1/2" Deep - Welded, W/Conduit KO's | Southwire
Raco 262 Square Extension Ring, Drawn, 4-11/16", 2-1/8" Deep with Eight 1/2 and Four 3/4" KO"s: Amazon.com: Tools & Home Improvement
Galvanized Steel, 1 1/2 in Nominal Dp, Extension Ring - 1RVU4|203 - Grainger
Circular Extension Ring 32mm - Marshall-Tufflex
TP564 | Eaton Crouse-Hinds series square extension ring | Specifications | Eaton
1/2" Octagon Box Ring Extension - Amazon.com
Extension Ring – Squarehood
