Ceiling Fan Junction Box


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Old 07-28-14, 10:37 AM
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Ceiling Fan Junction Box

I recently took down a light fixture in the guest room with the intent of installing a ceiling fan. My home is a 90+ year old rowhouse and does not have an attic, so I can't view from below. What I am seeing is the metal j-box is attached directly to one of the main roof joists. It appears to have two bolts and one screw attaching j-box to joist. My question, is this enough to support a fan? The box seems very solid, no movement at all, but all the attachment points are on one side of the box.

Thanks everyone.
 
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Old 07-28-14, 10:45 AM
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How it is mounted is secondary. The box itself is not fan rated. It has ears not posts so not enough threads and it uses 8-32 machine screws not 10-24.
 
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Old 07-28-14, 11:48 AM
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Thanks for the response. From what you are saying, can I simply buy a fan rated j-box and mount to underside of joist at the same location as my current box?

Fan & Fixture Support 2-1/8
 
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Old 07-28-14, 12:39 PM
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But how would you mount it. If the ceiling joist is right at the hole you might use something like this side mount box:

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Old 08-01-14, 10:03 AM
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That is exactly what I need. Do you have a brand or box spec that I could look up?
 
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Old 08-01-14, 10:09 AM
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Just use Google Advanced Image Search and look for what you want. They are all about the same quality wise if they are UL approved.
 
 

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