0050206029268

Master Flow

Model F8IFD12X300

Internet #202562743

Store SKU #816247

Store SO SKU #755578

12 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket

$65.60 /each

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Product Overview

The Master Flow 12 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R8 insulation which contains 50% 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.

  • R8 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

5 Questions6 Answers

Customer Questions & Answers

12 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket
12 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket

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2 answers

wht is the inside measurement?

This question is from 12 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket
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June 25, 2016
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Answers (2)

July 6, 2016
Answer: 
Slightly larger than 12 inches to allow it to slide over a 12" metal pipe. Please call MasterFlow Technical Services at 800-211-9612, M-F 8A-5P EDT, for any additional questions.
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June 27, 2016
Answer: 
The internal measurements are 12" diameter and 300" depth.
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1 answer

can this product be used for insulating metal duct work?

This question is from 12 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket
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Greenville Texas
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June 8, 2016
it says its over sized so will 12in. flex fit over 12in. metal duct work? or would it be better to use 12in. flex over 10in. metal duct work?
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Answer (1)

June 9, 2016
Answer: 
This product is not designed to cover metal HVAC metal pipe. Stated: "•Oversized core to "connect" quickly and easily to standard sheet metal fitting", not acting as a sleeve or covering, connecting. Please call Technical Services at 800-211-9612, M-F 8A-5P EDT, for any additional questions.
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1 answer

what is heat tempiture rating

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July 17, 2015
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Answer (1)

July 20, 2015
Answer: 
Our flex duct is rated for a 250 degrees Fahrenheit maximum temperature.
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1 answer

Can this flex be used under a double wide mobile home .the dia is 12 inches

This question is from 12 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket
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Gainesville ga
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June 29, 2015
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July 1, 2015
Answer: 
Thank you for contacting MasterFlow ....... No, the MIF 12 inch is designed for mobile home use. See your local Home Depot Store for price and availability.
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Customer Reviews

Rated 4.4 out of 5 by 8 reviewers.
Rated 1.0 out of 5.0 by 12" duct poor condition Ducting arrived in horrible condition. I wanted to sent it back, but had already waited too long for delivery. I used what I could and threw the rest in the trash. THE TRASH. June 28, 2016
Rated 5.0 out of 5.0 by Good product Good thick insulation. The duct came in in a box in a kind of compacted form but during installation it stretched up as needed. January 5, 2016
Rated 5.0 out of 5.0 by Fits exactly as required I bought this to replace a collapsed crossover duct underneath a double wide. The connection ends were cut very evenly such that I didn't have to trim them at all. I could have shortened the duct by about 4 ft for my application but didn't bother since the ends were prepared well. The outer sheath was plenty durable for dragging around under the house. The inner duct was plenty strong for the little bit of pulling and tugging required to get it on the fixed supply duct on the house. Would definitely use this brand again. Used a 3in and two 5in hose clamps joined together to secure the inner duct. Sealed both inner and outer with duct tape and problem solved January 8, 2013
Rated 4.0 out of 5.0 by Product is as advertised The duct came ready to install, shipped in a box approximately 16"x16"x4'. It was slightly kinked within the inner tube but not too badly (presumably during shipping). It was a simple matter to stretch out the duct for installation. November 12, 2013
Rated 5.0 out of 5.0 by I like the R8 insulating value compared to the existing R4 Used on my double wide home installed easily, fit properly January 2, 2014
Rated 5.0 out of 5.0 by Great product Silver outer layer. Comes in a box, not a bag. Be careful when calculating how much flex duct you need. Turns use up more than one would think. The larger the diameter the duct, the more you lose on a turn May 15, 2012
Rated 5.0 out of 5.0 by Product is as described online @homedepot.com Exactly as described, priced very reasonable. I'm glad I bought this flex duct online and installed it myself to replace a failed (collapsed) duct in my attic. Saved much $$ to have it installed by a HVAC company. April 17, 2012
Rated 5.0 out of 5.0 by great product really made a difference Great product difference is amazing instructions on box really made a difference July 4, 2012
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