Ceiling Fan Bracing


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Old 06-24-18, 06:31 PM
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Ceiling Fan Bracing

I'm looking to add a ceiling fan in a room that currently doesn't have one. The current light is mounted using a Madison Electric box which is mounted directly to a joist.

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I've tried putting in a metal box and brace, but since the current box is square to the joist and circular elsewhere there aren't any boxes that fit. I'm planning on using 2x4s as bracing. Would a 2x4 running between two joists over the top of the box provide enough support? Alternatively, I could run 2x4s on each side of the box from joist to joist and directly mount the fan to those.
 

Last edited by PJmax; 06-24-18 at 07:31 PM. Reason: added pic from link
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Old 06-24-18, 07:17 PM
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Your link didn't work. Remember the primary difference between a box for a light and box for a fan isn't weight but that you need a box for a dynamic load with beefed up fixturer screws to hold the fan. I think your link was to a smart box. If so why do you need extra bracing?

Is this the box you have?

https://www.homedepot.com/p/Madison-Electric-Products-Smart-Box-Adjustable-Depth-75-lbs-Light-Fixture-Support-50-lbs-Ceiling-Fan-Support-MSBFAN/203343431?cm_mmc=Shopping%7CG%7CBase%7CD27E%7C27-6_CONDUIT-BOXES-FITTINGS%7CNA%7CPLA%7c71700000034238990%7c58700003946879308%7c92700031954573787&gclid=CjwKCAjwgr3ZBRAAEiwAGVssnSwrN8rx5vL0pExrn6ky6gb4f9axmphvtqQ2HHMEj4KCEJVzy8ZxQBoCwLsQAvD_BwE&dclid=CK2ptbLe7dsCFYXZwAodwl4PgA
 
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Old 06-24-18, 07:33 PM
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You can run a 2x4 from joist to joist over the top of the box for additional anti-wobble support.
 
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Old 06-24-18, 07:44 PM
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That's the box. The box says it's only listed for fan support of 50 pounds or less, and the fan instructions say to use a box that's listed at 70 pounds or less, which is why I'm looking at additional support.
 
 

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