Arlington Industries BE1X Better device support in oversized or misscut wall opennings. Box Extender, levels and supports the wiring device where the box is set back from the wall surface extends the box up to an 1-1/2. 2 hour fire rating. Single Gang.

Arlington Industries BE1 Box Extender, 1-Gang, 1-1/2 Inch Extension, 2 Hour Fire Rating, White

Arlington Industries BE4 Box Extender 4-Gang, Extends 1-1/2 Inch, 2 Hour Fire Rating, White

Arlington Industries BE3 Box Extender, levels and supports the wiring device where the box is set back from the wall surface extends the box up to an 1-1/2. 2 hour fire rating. three gang.

Arlington Industries BES1 Non-Metallic Box Extender 1-Gang 5/8 Inch Extension, 3.336 Inch Width, White

Arlington Industries BE2 Box Extender Plastic 2-Gang 1-1/2 Inch Fire Rated White

Hubbell 55171K Extension ring for 4 In. Octagon Box, 2-1/8 in. Deep, 21 Cu. In., with Concentric, 1/2 & 3/4 in. KO (50-Pack)

Thomas & Betts BCOBEX 4IN ROUND BOX EXTENSION 1/2IN DEEP

Adaptaflex 531711234 Square Extension Ring, 30.3 Cubic Inches, 4 Inch x 2-1/8 Inch, Steel

Hubbell H1110RBAR Extension ring for Utility Box, 1-7/8 in. Deep, 16.5 Cu. In., 1/2 in. KO (10-Pack)

Hubbell H53151KBAR Extension ring for 4 In. Square Box, 1-1/2 in. Deep, 21 Cu. In., with Concentric, 1/2 & 3/4 in., and 1/2 in. KO (50-Pack)

Hubbell H55151KBAR Extension ring for 4 In. Octagon Box, 1-1/2 in. Deep, 15 Cu. In., with Concentric, 1/2 & 3/4 in. KO (50-Pack)

Hubbell H53171KBAR Extension ring for 4 In. Square Box, 2-1/8 in. Deep, 30 Cu. In., with Concentric, 1/2 & 3/4 in., and 1/2 in. KO (40-Pack)