Centaur Single-Gang Plastic Box Extender

Devco PI390 Utility Electrical Box Extension Ring 4 Inch L X 2-1/8 Inch W X 1-7/8 Inch D 13 Cu-Inch

Arlington BE4 Electrical Outlet Box Extender 4-Gang, Plastic BY BUYRITE ELECTRIC

Arlington Industries 1-Gang Box Extender For Shallow Boxes (Arlington Industries BES1)

Case Of 25, Southwire TOPAZ 1/2 Inch 4-Hole 1-Gang Extension Weatherproof (WB1450EXT)

Carlon E981efn-Ctn Fsc Conduit Outlet Box, 3/4"

4" Octagon Electrical Box Steel Extension Ring With (2) 1/2" And (2) 3/4" KO's | Launch 3 Telecom

Morris Products 36540 Weatherproof One Gang Flanged Box Extension Adapter - 6 Outlet Holes 1/2" Gray

Westgate WXF75-4 3/4 Inch Trade Size 4 Outlet Holes 13.5 Cubic Inch One Gang Flanged Extension Boxes BY BUYRITE ELECTRIC

HH239ADJ ABB THOMAS & BETTS - Electrical Products & Outlet/Handy Box Supplies

Receptxtenders HD50026 2-Gang 3/4 in. Electrical Receptacle Box Extension Ring (5-Pack)

Single Gang Box Extender

B520PR-UPC ABB THOMAS & BETTS - Electrical Products & Outlet/Handy Box Supplies

RACO 653 1-1/2-Inch Deep Handy Box Extension, Welded, (8) 1/2-Inch Knockouts, 4-Inch X 2-Inch