G1/2" Right Angle Three Hole Connecting Metal Round Junction Box - Screws - AliExpress
Ceiling Round Metal Concealed Box,Spot Box, Gi Modular Box, Junction Box, Dimension: 3 Inches, White
Commercial Electric 4 in. Round Metallic Weatherproof Box with (5) 1/2 in. Holes, White WRB550W - The Home Depot
RACO 3-1/2" Steel Round Electrical Box at Menards®
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
Commercial Electric 4 in. Round Metallic Weatherproof Box with (5) 1/2 in. Holes, White WRB550W - The Home Depot
Speco CVCJBD Small Round Junction Box
Amazon.com: (2 Pack) AP-12031, 5 Inch White Metal Ceiling Blank-Up Cover, Used to Cover 3-1/2 Inch Round/Octagon Box Openings In Ceilings or Walls, Mounting Screws Included, Holes Are Spaced 2.75 Inches :