Pass & Seymour C1-18-WAC 3-3/4 Round Old Work Ceiling Box w/ Swing Brackets & Four Auto/Clamps | World Electric Supply
Raco 297 4" Round Ceiling Rated Box, 1/2" Deep, Old Work | Cooper Electric
RACO 1-Gang Steel Old Work Shallow Round Ceiling Electrical Box, Gray
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RACO 1-Gang Steel Old Work Shallow Round Ceiling Electrical Box, Gray
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RACO 1-Gang Steel Old Work Shallow Round Ceiling Electrical Box, Gray
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Carlon 1-Gang 17 cu. in. PVC Shallow Old Work Electrical Switch and Outlet Box B117RSWR - The Home Depot
Steel City 36115C-30 Outlet Box, Round, Drawn Construction, 3-1/4-Inch Diameter by 1/2-Inch Depth, Galvanized - Idc Electrical Terminals - Amazon.com