Carlon 1-Gang 4 in. 20.5 cu. in. PVC New Work Octagon Electrical Ceiling Box with L-Bracket A615DEL - The Home Depot
4 Packs Octagon Electrical Box Cover, Galvanized Steel Metal Junction Box Covers, Blank Flat Outlet Box Cover for 4 inch Octagonal Box - Amazon.com
Hubbell Raco 4 in. Octagon Box, Drawn, 1-1/2 in. Deep, Two 1/2 & Six 3/4 in. KO's, Raised Ground, Gray, (126): Electrical Boxes: Amazon.com: Tools & Home Improvement
Steel City 4 in. x 2-1/8 in. Deep Octagon Box with 1/2 in. and 3/4 in. Knockouts 541711234-25R - The Home Depot
DALS Panel Light Retrofit for Octagonal Junction Box - 4" - Bed Bath & Beyond - 27388594
Hubbell-Raco 165 Octagonal Box, 21.5 Cu-in, 4 in Dia X 2-1/8 in D, 4" - Electrical Boxes - Amazon.com
Raco 175 4 Octagon Box With Ears: 4 Inch Round Octagonal Metallic Boxes (050169001752-2)
RACO 175 Octagon Box, 4 in OAW, 2-1/8 in OAD, 4 in OAH, 3-Knockout, Steel Housing Material, Gray
4" Octagon Box, 2-1/8" Deep - Drawn, W/Conduit KO's And Fixture Ears 3-1/2" O.C. | Garvin Industries
4" Octagonal Conduit Box for Conduit and Wire - Buy Conduit Box, Metal Box, Junction Box Product on HANGZHOU ESCO IMPORT AND EXPORT CO., LTD.