Finishing Basement.... How to extend HVAC Vent?


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Old 01-04-16, 06:04 AM
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Finishing Basement.... How to extend HVAC Vent?

One of the last projects before drywall is extending this vent down to below stud level. I went to Home Depot and asked a very concomitant lady in the aisle so I left with nothing.

So how would I extend this down? Its about 4" from the vent opening to the bottom of the stud.

Thanks for all the great help as always!
 
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Old 01-04-16, 07:03 AM
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You'll need a short piece of ductwork [4x10?] to extend it down. I don't know if that is something you can buy ready made or need to fashion it yourself .... but one of the HVAC pros should be along later and they will know.
 
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Old 01-04-16, 07:15 AM
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Id remove the existing register and put a blank over the hole. Then cut in a 6in round take off then add a 6in boot. It looks like it will be close to your ceiling height. If not you might have to add some round pipe to fit.
 
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Old 01-04-16, 07:16 AM
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I only work on duct when I have to....
Here's a link to a 3.25 x 10" Starting Collar. These are designed for just what you want to do.

3-1/4 in. x 10 in. Rectangular Stack Duct Starting Collar-SCF3.25X10 - The Home Depot
 
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Old 01-04-16, 07:27 AM
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The whole dimensions are 4 1/8" x 10"
 
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Old 01-04-16, 08:17 AM
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I would start with the collar I linked to and see how that works. Purchase a register that fits the collar.
Anything you do here will take some measuring and cutting and sealing of the joints.
 
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Old 01-11-16, 06:31 AM
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Anyone else have any thoughts?!

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