There s a couple of items that would work such as this light fixture mounting braket or this box cover adapter though since this is a ceiling fan i would think it would need to be secured using screws and nuts to ensure it didn t come loose.
Ceiling fan box adapter plate.
Westinghouse offers ceiling fan accessories including controls downrods and light kits.
Fantech 5ddu106a roof wall fan upblast centrifugal vent direct drive.
Raco 1 gang gray metal interior new work old work standard ceiling fan ceiling electrical box.
Free delivery with 45 order.
Westinghouse 3 mfd and 6 5 mfd fan capacitor model 7709100 12 24 12 24.
New work non metallic ceiling fan electrical box with mounting screws case of 6 model b720r shk 29 76 case 29 76 case free delivery with 45 order.
Electric box screw hole to screw hole is 2 75 inches.
Westinghouse lighting 101000 saf t 0 brace ceiling fan box 15 5 cu in x 2 3 4 in l x 12 1 2 in w x 1 1 2 in d x x x 3 7 out of 5 stars.
Free delivery with 45 order.
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1 16 of over 1 000 results for ceiling box extender amazon s choice for ceiling box extender imbaprice be1r 2 2 pack 1 gang 4 35 inch x 1 5 inch plastic electrical ceiling box extender for 3 5 and 4 round or octagonal boxes.
Minkaaire a145 swh minkaaire ma a145 fan accessories sloped ceiling adapters sloped ceiling adapter 1 0 out of 5 stars 1.
This box held a fan that is about the same size for 20 years without any stability issues.
Find ceiling fan mounting hardware at lowe s today.
New work hard shell ceiling electrical box with adjustable bar hanger.
Madison electric products fan and fixture 1 gang gray polycarbonate new work old work standard ceiling fan ceiling electrical box.
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Here s a cheap adapter to fix that.
Monte carlo aged pewter slope ceiling fan adapter model mc95agp 22 20 22 20.
Took old fan down and new fan mounting bracket is about a quarter to a half inch too wide for the box.