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
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
RACO 4 in. W x 1-1/2 in. D Drawn Octagon Extension Ring with Two 1/2 in. and Two 3/4 in. Knockouts, 1-Pack 130 - The Home Depot
Steel City 4 in. 21 cu. in. Square Box Extension Ring 531511234-20R - The Home Depot
Circular Extension Ring 20mm - Marshall-Tufflex
Electrical Contrustion BS 4568 Conduit Malleable Iron Extension Box / Extension Ring - China Conduit Junction Box Cover, Round Box Cover | Made-in-China.com
2 Pcs, 4 in. Round Pan Box Extension Ring, 1/2 in. Deep, Zinc Plated Steel Used to Mount Ceiling & Wall Lighting Fixtures to Provide Additional Wire Capacity - Amazon.com
73171-1 - Steel City 73171-1 - 4-11/16" x 2-1/8" Deep Square Box Extension Ring, 1" Knockouts
Steel City 4 in. 1-1/2 in. New Work Deep Pre-Galvanized Metal Octagon Electrical Box Extension Ring 551511234-25R - The Home Depot
ReceptXtenders 1-Gang 1/2 in. Electrical Receptacle Box Extension Ring (5-Pack) HD50004 - The Home Depot
4" Octagon Extension Ring, 2-1/8" Deep - Drawn W/Conduit KO's And Fixture Ears 3-1/2" O.C. | Garvin Industries
4" Square Plenum Extension Ring, 1-1/2" Deep - Drawn, W/Conduit KO's | Garvin Industries
Sigma Engineered Solutions 1-Gang Gray Metal Weatherproof New Work Standard Box Extender Exterior Electrical Box in the Electrical Boxes department at Lowes.com
Hubbell Raco 2 Set 4-11/16 in. Square Extension Ring, Drawn, 2-1/8 in. Deep with Eight 1/2 and Four 3/4 in. KO's: Amazon.com: Tools & Home Improvement
4 in. x 2 in. Handy Extension Ring, Drawn, 1-7/8 in. Deep, Eight 1/2 in. KO's | 665 | Raco
Vello Manual Extension Tube Set for Nikon F-Mount EXT-NFM B&H
ERA BRAND PVC-U INSULATING ELECTRICAL PIPE LOCATING FLANGES
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
Hubbell-Raco 207 :: 4" Square Extension Ring, 2-1/8" Deep, Welded, Metallic :: PLATT ELECTRIC SUPPLY
Galvanized Steel, 1 1/2 in Nominal Dp, Extension Ring - 1RVU4|203 - Grainger
Extension Ring – Squarehood
Steel City 531511234UB 4" Square Extension Ring, 1-1/2" Deep, 1/2" & 3/4" Knockouts, 21.0"° | Cooper Electric
Hubbell-Raco 262 2-1/8-Inch Deep Drawn Square Extension Side Knockouts - Walmart.com
Nauticam N120 Extension Ring 70 with lock
