Model # F6IFD4X144

Internet #203420974

Store SKU #398907

Store SO SKU #1000128581

Master Flow 4 in. x 12 ft. Insulated Flexible Duct R6 Silver Jacket
0050206031445

Master Flow

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

$16.99 /each

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Product Overview

The Master Flow 4 in. x 12 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. It can be used for venting bath fans where insulation is required. 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 & 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 degrees Fahrenheit
  • Always install per instructions and seal using approved mastic or sealant (or approved tape)

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Customer Questions & Answers

Why should I use an insulated jacket versus one without.

Asked by: Mark
Insulation minimizes the change in temperature of the air flowing through the pipe. The goal is to avoid condensation on the interior and/or exterior of the pipe as this type of condensation is a potential cause of mold formation and damage to the surrounding structure.
Answered by: Twons
Date published: 2016-12-28

Can the inner flexible duct be slid out of the insulation sleeve and discarded?

I would like to use the outer insulation sleeve on 4" aluminum tubing that will be used to vent a bathroom fan in my attic. Perhaps this would be easier than using insulation to wrap the 4" aluminum tubing. Any advice or comments would be appreciated. Thank you.
Asked by: RS
I used this duct for a bathroom fan and the inner duct was not directly adhered to the insulation though I would have to wonder how much damage might occur to the insulation when pulling it over a pipe.
Answered by: Twons
Date published: 2016-10-24

Can this hose be used for an electric dryer ventt?

Can this hose be used for an electric dryer ventt?
Asked by: Roger
Hi Roger, This is HVAC duct and does not meet code for use as a dryer vent. Mike
Answered by: MikeHDOC
Date published: 2016-11-22

4" duct NuTone fan; must I use 4" flexible duct? Fan 110cfm; flex duct 60cfm. Will this limit efficiency from 110 to 60?

Asked by: Wads50
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Customer Reviews

4 in. x 12 ft. Insulated Flexible Duct R6 Silver Jacket is rated 4.2 out of 5 by 13.
Rated 5 out of 5 by from Buy this for your bathroom vent, it's the best deal... Buy this for your bathroom vent, it's the best deal around. I did plenty of research and worked out great.
Date published: 2017-02-21
Rated 4 out of 5 by from Good quality and insulated. It is more important to have an insulated duct in colder areas, such... Good quality and insulated. It is more important to have an insulated duct in colder areas, such as the North, but for a small additional cost, this is the best way to go.
Date published: 2017-02-14
Rated 5 out of 5 by from Bathroom exhaust fan ductwork Easy to install and works great. Would definately purchase this product again!
Date published: 2017-02-08
Rated 5 out of 5 by from Easy to use and item was exactly as described. ... Easy to use and item was exactly as described.
Date published: 2017-02-14
Rated 3 out of 5 by from Okay vent hose - nice insulation I would say that this is an ok product. I had a problem with the inner jacket ripping. It would have been nice if it was the same foil material as the dryer vents. Be very careful and leave plenty extra in case ripping occurs. That being said the insulation is ok and I would use this again.
Date published: 2016-07-05
Rated 4 out of 5 by from fine product but... Fine product but wish it could be bought in shorter length. I have 8 feet left over. I will probably use it later and it doesn't eat anything so...
Date published: 2013-04-02
Rated 2 out of 5 by from Comes up short on length This product claims to be 12 feet in length. You can only achieve this length if you stretch the product to full capacity, which is not ideal for the proper install.
Date published: 2016-05-24
Rated 5 out of 5 by from No regrets! Used this product when I installed new 4" exhaust fan that ran through attic to roof vent. Spend the few extra bucks and get this insulated duct to prevent condensation from forming and running back down to fan and ceiling. Seems to be well made and should function as intended. Good price, accurate description, no regrets!
Date published: 2015-12-29
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