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
$ 26 78 /each
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Frequently Bought Together

Frequently Bought Together

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.
  • 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)

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.

  • 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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Specifications

Dimensions

Product Depth (in.)
300
Product Diameter (in.)
4 in
Product Height (in.)
7.5
Product Length (in.)
300
Product Width (in.)
7.5
Wall Thickness (in.)
1.75

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.)
7.5
Product Length (in.)
300
Product Width (in.)
7.5
Wall Thickness (in.)
1.75

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 this be used on a dryer vent

Asked by: Howie
No, check your local codes and the dryer manufacturers instructions for the correct venting guidelines.. Should you have any further questions, Please do not hesitate to contact Master Flow Technical Support at 1-800-211-9612.
Answered by: Master Flow
Date published: 2018-06-11

Can this duct be use for bathroom exhaust fan

Can this duct be use for bathroom exhaust fan
Asked by: Anton
Yes, that's exactly what i used it for. First I tried the non-insulated foil tubing, which was awful and would have promoted condensation inside the cold walls during winter. This is a high quality product that i would definitely recommend. Even if you don't care much about the insulation, it is a very good material and it's 25 feet long so there should be no joints. I used it in an attic, and with insulation around the inner polymer sleeve the moisture should not condense.
Answered by: JFos
Date published: 2018-08-07

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: pjs14
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
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Customer Reviews

4 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket is rated 4.7 out of 5 by 92.
Rated 4 out of 5 by from Easy, clean, strong, effective Replaced non-insulated bathroom flex-ducts with this stuff. It comes compressed in a box about 3-ft long which is real handy in tight spaces. The outside silver-jacket and inner flex duct materials were both a lot stronger and tear-risistant than I expected. It does take a few minutes and/or gentle massaging to reach full length, but this wasn't a problem. Highly recommend this material for similar applications, though be sure to get ALUMINUM or plastic couplers, not galvanized! Also, since the material is so strong, you'll have a hard time w/ any joints that aren't slightly undersized, the duct does NOT stretch larger (a good thing).
Date published: 2015-01-13
Rated 5 out of 5 by from Good for bathroom vent fans I bought this after seeing a like-product used on This Old House to create a roof vent for bathroom fans. It works great and is easy to use/cut. This duct is compressed inside the box when you buy it, so be ready for it to continually "ooze" out of the box when you first open it. I only wish the Home Depot site had worked better, because it said the product was not carried in my local store, when in fact, it was. I happened to go down the ducting aisle a week after I bought this online and paid for shipping, and there were plenty of boxes of the ducting available in-store.
Date published: 2011-05-28
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 Great Product and Excellent Value I bought this to use on a new bath ventilation fan. The ducting for the previous fan not insulated. The builder simply buried it under the sprayed insulation. I looked on the HD website and was amazed that this insulated ducting was a much better value then plain ducting. I only used about half the ducting so I have more for when I do the other bath fan. This duct is easy to work with and appears to be high quality.
Date published: 2015-04-30
Rated 5 out of 5 by from duct work I used this product to extract the air from the shower through the attic and out the vent in the roof. The coils in this duct is a lot stronger than the original duct that the builder used when they built the house. The original duct did not have insulation and therefore collected a lot of the moisture and would eventually fill up with so much water in the duct that the air was not able to flow out. This new duct has insulation that should prevent/reduce condensation in the duct, and reduce my maintenance to the duct work.
Date published: 2010-03-20
Rated 5 out of 5 by from What you need for bathroom exhaust fans! If you are going to install a bathroom exhaust fan, or already have one, then this is what you need for properly venting it up and out of your roof. The insulation helps reduce condensation inside the vent duct in wintertime. In this box, you will probably get much more than you actually need, so it's a good value for the price.
Date published: 2010-06-22
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 Easy fix for bathroom vent fans Contractor built house and used flimsy plastic venting for bath fan and vented it to roof eaves. Started to get condensation in pipe and water stains around ceiling vent. Bought this insulated pipe and replaced old pipe. Then vented thru outside wall. This insulated pipe is 25' long, more than enough to suit almost any situation. Well insulated and easy to secure with worm gear clamps.
Date published: 2016-03-15
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