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Model # F8IFD6X300

Store SKU # 810991

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

$8042
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  • R8 fiberglass insulation is perfect for heating and A/C systems
  • Galvanized core wire resists rust and corrosion
  • Insulated duct can withstand up to 200°F
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Product Details

The Master Flow 6 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 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 200F
  • Always install per instructions and seal using approved mastic or sealant (or approved tape)
  • Return Policy

Additional Resources

From the Manufacturer

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Specifications

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Questions & Answers

76Questions
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Q:Can this be used for the return inlet under a mobile home or would the black type ductwork be better?
by|Sep 13, 2023
0 Answer
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Q:Im Living in a trailer and I want to Know if I can use this flexible duct R8 for my heater/air conditioning that works with electricity and gas ?
by|Aug 7, 2023
1 Answer
Answer This Question

A:  Yes, it can be used in your situation, check your local codes for specifics on clearances from the ground and the equipment. If you have any inquiries about Master Flow products please email warrantyllbp@gaf.com

by|Aug 8, 2023
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    Q:Can this be used to vent electric dryer to the outside thru a cool cellar to prevent condensation inside vent?
    by|Jul 23, 2023
    1 Answer
    Answer This Question

    A:  No, this should not be used for dryer venting, Most Local Codes do not allow Flexible duct on Dryer Vents.

    by|Jul 24, 2023
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      Q:This product will fail inspection because it is missing the printing required every 3 feet (manufacturer, r-value, etc.) International Residential Code: M1601.3 Am I wrong?
      by|Jul 16, 2023
      0 Answer
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      Showing 1-4 of 76
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      Customer Reviews

      4.7 out of 5
      (330)
      • 4.7
        out of 330 reviews
      • 92% recommend this product
      Filter by:
      Showing 1-10 of 330 reviews
      Definitely a quality product, very easy to work with. Ships in a box that may arrive open, but that did not affect the quality of the product. Will absolutely use again.
      by
      Response from Master FlowAug 18, 2023
      Thank you for the feedback. Glad you were satisfied with your Master Flow purchase. MasterFlow
        Mislabeled box. 7" duct instead of 6"
        I'm not sure what the deal was (if someone switched the label or manufacturing error) but the box I bought had a 6in label on it and the ducting ended up being 7in. Unfortunately, I did figure this out until I dragged the box up into the attic and opened it up. At that point it just wasn't worth it to drag it back out and try to cram it all back in the back (it basically springs out once opened). I made it work, but it was still frustrating and made the project just that much harder. So try and double check the sizing of the ducting before you get too deep.
        by
          Decent quality. Wish they had higher R ratings available.
          Decent quality. Wish they had higher R ratings available.
          by
          • Verified Purchase
          • Recommended
          3 found this review helpful
          Easy to install with a screwdriver, knife, and wire cutter (needle nose pliers for the wire in th...
          Easy to install with a screwdriver, knife, and wire cutter (needle nose pliers for the wire in the outer shell). It insulates the inner tube from the cold attic in the winter.
          by
          • Verified Purchase
          • Recommended
          1 found this review helpful
          Product is durable and easy to work with.
          I ordered two. Product is durable and easy to work with.
          by
          • Verified Purchase
          • Recommended
          4 found this review helpful
          Product is durable and easy to work with.
          I ordered two. Product is durable and easy to work with. After shaking and pulling, both were 22 ft long not 25 ft. I really missed the extra 6 feet but made it work. I got 2 10" also both were 25ft. Tip:I recycled all the insulation from the old flex duct .
          by
          • Verified Purchase
          • Recommended
          18 found this review helpful
          by
            Good price, fast shipping needed the R8 for my system to up to code
            by
            Response from Master FlowAug 24, 2023
            Glad you were satisfied with your Master Flow purchase. Thanks for the feedback. MasterFlow
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