Need help installing exhaust fan in bathroom

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Old 02-10-14, 07:51 PM
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Need help installing exhaust fan in bathroom

I was thinking of getting this model:

panasonic FV-08VQ5



Do I have to mount it from below or from in the attic? In other words, does the flange go under the ceiling or above it?
 
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Old 02-11-14, 12:57 AM
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You'll have to mount it from above. The flange should be flush with the bottom of the sheetrock. The cover will hide any small gap you have.
 
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Old 02-11-14, 11:24 AM
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So if the fan needs to be shoved through the hole starting from in the bathroom then I will have to pull it through the hole with a rope from the attic and then hold it in place for bracing. I wonder if I can take the guts out to lighten the load and then place them back in after securing the box.
 
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Old 02-11-14, 02:15 PM
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No, cut the hole the size of the flange and insert the fan from above. The flange only has to be level with the sheetrock. Your spanner bars will hold it all in place, then your cover will snap in. I doubt you would ever be able to shove the entire unit from below due to the exhaust and electrical connection box. Do you have the installation instructions for your particular unit?
 
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Old 02-11-14, 08:06 PM
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This is the instructional manual:

http://lib.store.yahoo.net/lib/rewil...stallation.pdf

I plan to use a couple 2 x 4's to brace across the 24" joists. That way I can put the new fan right on top of the old fan spot.

The way you described sounds ok I guess, but I'm picturing in my head that trying to level the box perfectly will be kind of hard seeing that I can't see when the flange is level with the bottom of the sheet rock from in the attic.
 
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Old 02-12-14, 02:51 AM
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Your instructions suggest cutting a hole 10 1/2" x 10 1/2" and installing the box from below, starting with the exhaust first. That would place the flange below the sheetrock. I hope this will give you enough room to rotate it into position. Doing it your way is fine, too. Just screw a 1x4 to the sheetrock spanning the opening. Drop the unit in from above. It will be flush with the sheetrock, allowing you to fasten it to the lumber.
 
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