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Master Flow

Model # F6IFD12X300

Internet # 100182573

Store SKU # 685795

12 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket

This item has been discontinued.
The Home Depot no longer carries this specific product.

$49.97 /each




Model # F6IFD12X300

Internet # 100182573

Store SKU # 685795

Store SO SKU # 755578

The Master Flow 12 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R6 insulation which contains 33% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard.

  • R6 fiberglass insulation for greater insulating power
  • Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
  • Oversized core to connect quickly and easily to standard sheet metal fitting
  • Galvanized core wire for greater corrosion resistance vs. non-galvanized wire
  • Duct can be cut to length as needed
  • Insulated duct features a maximum temperature rating of 200°F
  • Always install per instructions and seal using approved mastic or sealant (or approved tape)

Info & Guides

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Product Depth (in.) 
Product Diameter (in.) 
12 in 
Product Height (in.) 
Product Length (in.) 
300 in 
Product Width (in.) 
Silver Jacket 
Insulator material 
Maximum air flow (CFM) 
R Value 
Warranty / Certifications
Certifications and Listings 
2-UL Recognized,ETL Listed 


Rated 4.3 out of 5 by 14 reviewers.
Rated 5.0 out of 5.0 by Great tubing to work with !!! I use 135 ft of this and it was great to work with and at the end it worked great !!!! I would use it again and again !! April 8, 2013
Rated 5.0 out of 5.0 by amazingly flexible The plastic lining is very tough despite being thin. The ductwork is amazingly flexible in tight spaces. I needed to go over a concrete pier, under a main support beam and around the main drain line of the house. I had about 8 inches of clearance and thought I would have to move one or more of these items to get the 12 inch ductwork where it needed to go. The ductwork snaked through the tight space and around the main drain line with very little effort on my part. I cannot write enough good things about this product. September 29, 2013
Rated 4.0 out of 5.0 by ac duct Just have to watch out when you open the box, like a jack-in-the-box. July 21, 2015
Rated 5.0 out of 5.0 by Better pricing for identical product Easy to install and cut to length. Well made, should last in hot attic for many years. Shipped in heavy duty box very quickly. Price was much lower than through ebay or Amazon. June 2, 2015
Rated 4.0 out of 5.0 by This product was just what we needed. Everything was great. No problem ordering or receiving shipment. January 28, 2014
Rated 4.0 out of 5.0 by good quality job went as expected. must pre plan and have proper fittings ready. May 19, 2015
Rated 5.0 out of 5.0 by It was a very good purchase The duct was easy to assemble and only took 5 minutes May 9, 2015
Rated 4.0 out of 5.0 by For a first-time user I can't really gripe. Tool a little time to figure out how it worked but I did get it installed. So far so good. My first experience with this type of product so it took a while to figure it out but then I could install it easily. Typical for attics, getting to the location was a worse job than installing the product. December 10, 2014
  • 2015-10-03T12:06:15.019-05:00
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