Model # RD3.25X12X36

Internet #100154101

Store SKU #623328

Store SO SKU #1000683573

null 3.25 in. x 12 in. x 3 ft. Half Section Rectangular Stack Duct

3.25 in. x 12 in. x 3 ft. Half Section Rectangular Stack Duct

$6.28 /each

Frequently Bought Together

Product Overview

Master Flow's Rectangular Stack Duct is used for HVAC system applications between wall studs as supply and return ducts, and to vent range hoods, kitchen and bath fans between walls as well . Installing rectangular duct between wall studs saves space, and is an easy way to route air up or down a wall and to other stories of a home. It also works in overhead spaces between floor joists or in attics. Sold in "L" sections. Two pieces must be ordered to produce a full section of duct.

  • Sold in Half Sections - 2 pieces needed for complete section of duct
  • Sections easily snap together with no tools necessary
  • Can be cut to needed length with simple tin snips (not included)
  • Notched corners for easily connecting sections, or use cleats (cleats not included)
  • Always seal seams with code-approved mastic, sealant or duct tape (not included)
  • Install with sheet metal screws (not included)

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Customer Reviews

3.25 in. x 12 in. x 3 ft. Half Section Rectangular Stack Duct is rated 1.7 out of 5 by 3.
Rated 1 out of 5 by from Buyer Beware! L shaped pieces do not interlock well. Connection is flimsy and once bent out of shape it becomes increasingly more difficult to install. That on it's own should cause you to buy another product, BUT this 12" x 3.25" size has no available accessories. There are no end caps, transitions, angle adapters, etc. I made the mistake of running all my horizontal supply, then found no connection piece to the boiler, no 90's, no duct boot connections, etc. You will end up having to custom all the hard stuff at great risk to your long term efficiency! The smaller size has a lot of those options, but the size / area wouldn't satisfy my air flow needs. I tried the Home Depot website and 4 stores, and considering the lack of knowledge on the Home Depot staff I am less likely to return for other than basic needs. I have had other recent issues with flooring, lighting, and insulation. For the modest price increases I am no longer starting my shopping at Home Depot, rather ending there in desperation! Considering the cost and the time I wish I just ripped it out and bought a different product.
Date published: 2015-03-31
Rated 3 out of 5 by from due to availability it as a fair purchace Section halfs wouldn't stay snappped togeather propertly requiring screws be installed where normally not required.
Date published: 2012-04-17
Rated 1 out of 5 by from don't buy! 30 guage ,very flimsy, very hard to join sections. In store procuct is better
Date published: 2013-01-24
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