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Old 08-23-2012, 04:10 PM   #1
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4in vs 6in bathroom exhaust line


Hi All,

I just got a new NuTone 130cfm bathroom fan and it has either a 6 or 4 in adapter. I know I know, 6 is better, but is this a huge differece? If so, I need to get all new vents and lines.

Thanks.

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Old 08-23-2012, 06:18 PM   #2
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4in vs 6in bathroom exhaust line


The 6 inch will increase flow by about double so, if it's a small bathroom go with the smaller diameter vent but, if large bathroom OR length of vent is more than 15 feet (each elbow is equivalent to 5 feet.) would be better with 6 inch.

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Old 08-23-2012, 06:49 PM   #3
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4in vs 6in bathroom exhaust line


Thanks man. I'm going to stick with the 4in because thats what the vent bundle came with. I did go out and buy a new insulated 4in line though. The line in the vent bundle is not insulated and this will be in the attic.

Thanks for taking the time to reply.
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Old 08-23-2012, 09:50 PM   #4
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4in vs 6in bathroom exhaust line


4" will have more velocity which would help get it out quicker,i guess Ive never seen a fart fan with a 6" vent hooked to it.
That thing would have to be huge,do you have a seat belt on the toilet?
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Old 08-24-2012, 08:27 AM   #5
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4in vs 6in bathroom exhaust line


Haa, nice. 6in is a thick line just for a fan. I was at HD last night looking at the insulated lines... I think 4in would be fine...

Are you trying to channel your inner Mark Levin from your signature?
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Old 08-24-2012, 10:35 AM   #6
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4in vs 6in bathroom exhaust line


That signature was from a previous post long ago .
And yes Im a big Mark Levn fan

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