Dryer vent in wall won't accomodate 4 inch pipe

snewsieJuly 8, 2013

I purchased new washer dryer to replaced the old one which was hooked up to 3 inch venting (it's a condo unit and the washer/dryer was only 1.5 Cubic feet). My husband would like to change it out to 4 inch hard aluminum ducts but it will not fit in the wall where it runs up to the attic and then out. He tells me that the hole in the attic, that you drop the run down, is in a 2x4 and can not accommodate a larger hole. ??? Any thoughts on how to get a 4 inch pipe in that wall - I've read about shaping it into an oval possibly for the wall only portion. Thanks for any thoughts...

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This Whirlpool periscope vent extends to 77" and requires only 2.5" of clearance:


Here's some 4"-oval "skinny" ducting:


    Bookmark   July 9, 2013 at 11:13AM
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Thank you!

    Bookmark   July 10, 2013 at 4:21AM
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Or maybe something like an adapter?? See link below:

Here is a link that might be useful: Four inch to Three inch adapter

This post was edited by jseeley on Tue, Aug 27, 13 at 19:55

    Bookmark   August 27, 2013 at 7:53PM
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It's a short run, but FWIW, it may be noiser AND possibly decrease the motor life on the fan as you are restricting volume..

    Bookmark   August 27, 2013 at 9:22PM
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