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Ceiling Fan Mounting Bracket with Adjustable Bar Hanger, 1-1/2'' Deep, 2 NMSC Clamps, 2 1/2'' Knockouts, Fits 16-24 Inch Joist Spaces, Ground Screw, Electrical Box for Light Fixtures - Amazon.com
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Plastic Flat Blank Plate Wall Hole Cover Ceiling Cover Plate, Outlet Cover, Electrical Box Cover with M3.5 Screws for Ceiling Fan Light Switch Junction Box (26 Pcs, 4.3 Inch in Diameter) - Amazon.com
![lighting - My circular old work electrical box is too small for the light fixture mounting bracket - Home Improvement Stack Exchange lighting - My circular old work electrical box is too small for the light fixture mounting bracket - Home Improvement Stack Exchange](https://i.stack.imgur.com/2eEpn.png)
lighting - My circular old work electrical box is too small for the light fixture mounting bracket - Home Improvement Stack Exchange
![BELL PVC Weatherproof New Work/Old Work Round Electrical Box in the Electrical Boxes department at Lowes.com BELL PVC Weatherproof New Work/Old Work Round Electrical Box in the Electrical Boxes department at Lowes.com](https://mobileimages.lowes.com/productimages/14b92609-56d4-4b1d-9d8b-3cf6aa80d96f/15053915.jpg)
BELL PVC Weatherproof New Work/Old Work Round Electrical Box in the Electrical Boxes department at Lowes.com
![Carlon 1-Gang 4 in. 20.5 cu. in. PVC New Work Octagon Electrical Ceiling Box with L-Bracket A615DEL - The Home Depot Carlon 1-Gang 4 in. 20.5 cu. in. PVC New Work Octagon Electrical Ceiling Box with L-Bracket A615DEL - The Home Depot](https://images.thdstatic.com/productImages/7e9043bc-39b9-4f3f-b625-1e1dc1eaf55d/svn/carlon-boxes-brackets-a615del-40_600.jpg)