Model # F6IFD4X300

Internet #100396934

Store SKU #394317

Store SO SKU #1000683795

4 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket
0050206922064

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

  • R6 fiberglass insulation for greater insulating power
  • Used for heating, A/C systems and some venting
  • Duct can be cut to length as needed
$2478 /each
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Frequently Bought Together

Installation Options

Product Overview

  • R6 fiberglass insulation for greater insulating power
  • Used for heating, A/C systems and some venting
  • Duct can be cut to length as needed
The Master Flow 4 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.
  • 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
  • Insulated duct features a maximum temperature rating of 200°F
  • Always install per instructions and seal using approved mastic or sealant (or approved tape)

Product Overview

  • R6 fiberglass insulation for greater insulating power
  • Used for heating, A/C systems and some venting
  • Duct can be cut to length as needed
Model #: F6IFD4X300
Sku #: 394317
Internet #: 100396934

The Master Flow 4 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.

  • 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
  • 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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Specifications

Dimensions

Product Depth (in.)
300
Product Diameter (in.)
4 in
Product Height (in.)
8
Product Length (in.)
300 in
Product Width (in.)
8

Details

Color
Silver Jacket
Insulated
Yes
Insulation R-Value
6
Insulator material
Other
Material
Fiberglass
Maximum air flow (CFM)
30
Returnable
90-Day

Warranty / Certifications

Certifications and Listings
2-UL Recognized,ETL Listed

Specifications

Dimensions

Product Depth (in.)
300
Product Diameter (in.)
4 in
Product Height (in.)
8
Product Length (in.)
300 in
Product Width (in.)
8

Details

Color
Silver Jacket
Insulated
Yes
Insulation R-Value
6
Insulator material
Other
Material
Fiberglass
Maximum air flow (CFM)
30
Returnable
90-Day

Warranty / Certifications

Certifications and Listings
2-UL Recognized,ETL Listed

Questions & Answers

Can you use this for microwave venting?

Asked by: DC
I have always hard piped microwaves, used this product for bath exhaust fans!
Answered by: Pjs
Date published: 2018-04-15

Can I connect these to get a longer piece..

Asked by: Rob
Yes, these can be attached to longer pieces using clamps.
Answered by: CommunityAnswer
Date published: 2018-01-27

Can you cut this duct to size - if I need only 17 of the 25 feet?

Asked by: Anonymous
Yes. Can be cut to size. Just peel back insulation and clamp flexible tubing onto outlet or whatever other connection you have. Then fold insulation back into place. Works great.
Answered by: Al
Date published: 2016-06-02

Can this be used as a dryer duct to vent outside? I only have a run of 7 feet from the dryer to the vent hole outside?

I have a smooth rigid duct in place now, but I am having problems with condensation dripping when the dryer is not in use, due to the cold weather. So I'm thinking the insulated duct will help stop the condensation problem
Asked by: scoot17
no
Answered by: bill
Date published: 2018-04-15
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Customer Reviews

4 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket is rated 4.6 out of 5 by 77.
Rated 5 out of 5 by from With the freakishly cold weather we've been having this winter, we developed a problem with water... With the freakishly cold weather we've been having this winter, we developed a problem with water vapor freezing inside our regular plastic ducting that connected the bathroom vent fan up through the attic and out through the roof. When the ice would melt, water would drip back out of the vent fan and make a mess in the bathroom. We removed the old plastic ducting (along with the 10 lb chunk of ice that was inside it - wow!) and replaced it with this. It was easy to connect since the inside is the same size as the regular cheapo plastic ducting. And since switching, we have not had any more dripping so I assume it is doing its job. The only problem is that 25 feet of this is WAY more than we needed and it didn't come in smaller lengths. So now we have a pile of leftovers which I suppose we'll use if any of our other bathroom fans have the same issue in the future. Anyhow, this did the job for a reasonable price and now we can sit on the toilet without getting dripped on - what more could you ask??
Date published: 2018-01-02
Rated 5 out of 5 by from I purchased the Master Flow 4 in. x 25 ft.... I purchased the Master Flow 4 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket to use as an outside air combustion line ducted to the burner opening of my 40 year old furnace. Not sure if it will lower my gas bill (which is not high to begin with) but it does eliminate the minor negative pressure in my 100 year old home. This makes it safer as I have really tightened the house up and want to be sure of positive flow up the flu for both the furnace and hot water heater. Get a hold of the liner and pull it out before positioning the duct or you might find yourself reaching up the length of your arm into the fiberglass insulated tube to find it!
Date published: 2018-02-13
Rated 5 out of 5 by from My use for this product had nothing to do with HVAC... I used this to insulate PEX pipe in an un... My use for this product had nothing to do with HVAC... I used this to insulate PEX pipe in an unheated crawl space. I was able to run the pipe through the duct and then feed the pipe duct assembly through the crawl space and then make the connection on each end. It works great. Warm air from our basement travels up the duct and into the space below our kitchen cabinets, so I doubt we will have any problem with pipes freezing.
Date published: 2017-12-06
Rated 5 out of 5 by from So far, this item fits as expected, and presents nothing else that was unexpected. The sealed bo... So far, this item fits as expected, and presents nothing else that was unexpected. The sealed box that the duct was sold in does not provide a full descriptor of the contents, so one has to rely on the stocking bin location to be correct. There were other product variations nearby, so it would help if the store exhibit included a cross-section of the product so that certainty of what was being purchased could be achieved.
Date published: 2018-01-30
Rated 3 out of 5 by from I did not use this product. It seems to be... I did not use this product. It seems to be a good product but did not meet the requirements I was looking for. The space I had was much too limited to allow a useful fit. I was also uncomfortable with the corrugated conduit as such conduit is restrictive compared to the smooth metal tube that is available. Also, the product did not include tees or wyes, which were required in the design of the system built. Instead, I used galvanized metal tube conduit, adjustable elbows and a wye and wrapped it in foil covered bubble wrap with additional layers of bubble wrap material as a blanket held in place with metal tape and wood strips screwed into the flooring to keep it all snug.
Date published: 2017-12-27
Rated 3 out of 5 by from This was too flimsy for what i needed to vent a bathroom fan out the roof, i like the idea of ins... This was too flimsy for what i needed to vent a bathroom fan out the roof, i like the idea of insulating the pipe however and i think i will try something like that on my aluminum exhaust vent to keep it from sweating with my hot showers and such a small bathroom...
Date published: 2017-12-19
Rated 5 out of 5 by from An easy install with the provided plastic ties and with... An easy install with the provided plastic ties and with the installation surrounding the duct should provide the installation to keep cold air out of the bathroom
Date published: 2018-04-10
Rated 5 out of 5 by from Great product if you can't run hard pipe. The inner duct is a lot stronger material than just the... Great product if you can't run hard pipe. The inner duct is a lot stronger material than just the normal vinyl duct. Easy to work with just use good clamps.
Date published: 2017-12-26
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