Carlon 1-Gang 18 cu. in. PVC Round Old Work Electrical Box B618RR - The Home Depot
4 Inch Round 1/2 Inch Deep Old Work Pan Box With 2 1/2 Inch Conduit Knockouts - Amazon.com
Carlon 50 Lb. Rating Old Work PVC Molded Ceiling Box - Gillman Home Center
Newhouse Hardware Old Work Electrical Outlet Box for Residential and Light Commercial Remodel, 2 Gang, 25 CuIN, 3-Pack, Gray (AG223R-3) - Walmart.com
How to Install an Old Work (Retrofit) Electrical Box
Old Work Box for 5 lb Fixture | Information by Electrical Professionals for Electrical Professionals
Explanation: "Old work" ceiling electrical box for pendant or led lights - YouTube
Carlon BH614R Round Old Work Box, 3 1/2-Inch, Blue - Electrical Outlet Boxes - Amazon.com
Carlon 1-Gang 18 cu. in. PVC Round Old Work Electrical Box B618RR - The Home Depot
RACO 1-Gang Steel Old Work Shallow Round Ceiling Electrical Box, Gray
Newhouse Hardware 1-Gang PVC Old Work Electrical Outlet Box (1-Pack) | 14 cu. in. Plastic Junction Box for Switches, GFCI, or Duplex Receptacle Outlet | Electrical Box for Home Improvement - Amazon.com
4" Octagon Old Work Box, 1-1/2" Deep - Drawn, W/Conduit KO's And Fixture Ears 3-1/2" O.C. | Garvin Industries
RACO 1-Gang Galvanized Steel Old Work Round Electrical Box in the Electrical Boxes department at Lowes.com
Remove old ceiling pancake (pan) junction box, or how to work around bolt in that box? - Home Improvement Stack Exchange
Low Voltage Single Gang Old Work Box (box of 12) — Habitat for Humanity Troup County
Junction Boxes - The Differences: New VS. Old Work - YouTube
Southwire 1-Gang Polycarbonate New Work/Old Work Round Electrical Box in the Electrical Boxes department at Lowes.com
How to Install an Old Work Ceiling Box - YouTube
CARLON 1-Gang Blue Plastic Old Work Standard Round Ceiling Electrical Box at Lowes.com