Model # F8IFD4X300

Internet #202562739

Store SKU #809916

Store SO SKU #1000685276

Master Flow 4 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket

Master Flow

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

$36.25 /each

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Product Overview

The Master Flow 4 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

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Customer Questions & Answers

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

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Can this be used as a dryer vent for a clothes dryer?

This question is from 4 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket
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December 12, 2015
I want to use this to connect my dryer to the in wall vent.
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Answer (1)

December 15, 2015
Thank you for inquiring about MasterFlow Products ... Yes, This can be used for this application, just make sure that the temperature of the air from your dryer is below 220 degrees Fahrenheit. Please call Technical Services at 800-211-9612, M-F 8A-5P ET, with any additional questions.
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Customer Reviews

Rated 4.0 out of 5 by 4 reviewers.
Rated 5.0 out of 5.0 by Insulated vent hose Easy to install I used zip ties to hold inner hose in place and wrapped over tie with aluminum tape. Used zip tie on outer hose followed up with tape also. I did this on my home. I am not digging through insulation again. October 25, 2016
Rated 3.0 out of 5.0 by not for bath fan over 50 cfm Installing on exhaust fan? I recommend the Thermaflex KP 4 in. x 25' duct R8. At similar price with 10X the cfm!! It just makes sense July 18, 2015
Rated 4.0 out of 5.0 by nice product I was looking for a heavy insulated bath fan duct for a vertical replacement in a cold attic that was having sweating problems. This R8 product was the heaviest insulation I could find and it cured the problems. It installs nice - just cut through the insulation and then the vinyl duct - snip the wire - slide the insulation back and clamp the vinyl duct to the pipe - finish. The shipping was fast as well. January 17, 2012
Rated 4.0 out of 5.0 by Stopped my vents dripping from condensation! Stopped my vents in my bathrooms from leaking. A little pricey but they got the job done. January 13, 2014
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