Steel City 531511234UB 4" Square Extension Ring, 1-1/2" Deep, 1/2" & 3/4" Knockouts, 21.0"° | Cooper Electric
Hubbell-Raco 653 Handy Box Extension Ring | Standard Electric Supply Co.
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 4-11/16 in. 2-Gang New Work Square Metal Electrical Box Extension Ring 73151 1/2 3/4 - The Home Depot
Nauticam N120 Extension Ring 70 with lock
TP564 | Eaton Crouse-Hinds series square extension ring | Specifications | Eaton
Commercial Electric 1-Gang Metallic Weatherproof Extension Ring with (4) 1/2 in. Holes, Gray WSE450G - The Home Depot
Appleton 4SSBESPL :: 4" Square Extension Ring, 1-1/2" Deep, Welded, Metallic :: PLATT ELECTRIC SUPPLY
Classic Hopper Extension Ring
Extension tube - Wikipedia
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
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
3-1/2" Round Pan Box Extension Ring, 1/2" Deep - Drawn, Fixture Earss2-3/4" O.C. | Southwire
4-11/16" Square Extension Ring, 1-1/2" Deep - Drawn, W/Conduit KO's | Southwire
3-1/2 in. Octagon Extension Ring, Drawn, 1-1/2 in. Deep, Four 1/2 in. KO's | 111 | Raco
Extension Ring – Squarehood
Galvanized Steel, 1 1/2 in Nominal Dp, Extension Ring - 2DDA7|653 - Grainger
Extension Rings - Weatherproof Products
1/2" Octagon Box Ring Extension - Amazon.com
Hubbell-Raco 207 :: 4" Square Extension Ring, 2-1/8" Deep, Welded, Metallic :: PLATT ELECTRIC SUPPLY
Slab Box Extension Ring - Kraloy Fittings
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
Commercial Electric 4 in. Round Metallic Weatherproof Extension Ring with (4) 1/2 in. Holes, Gray WRE450G - The Home Depot
Sigma Engineered Solutions Metal Weatherproof New Work Box Extender Electrical Box in the Electrical Boxes department at Lowes.com
