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KM 10 in. x 25 ft. HVAC Ducting- R8.0

$5396
/box
  • Designed for use with medium to low-pressure systems
  • Corrosion-resistant steel wire core ensures prolonged use
  • R-8 fiberglass insulation helps reduce heating and cooling cost
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Price:
$5396

Product Overview

Strong polyester film laminated and encapsulating a heavy, corrosion resistant steel wire helix, forms the inner core. And supports a thick blanket of fiberglass insulation. The outer vapor barrier is a new bi-directional reinforced metalized vapor barrier which will not unravel.
  • Reduced total installation cost - fast, economical installation
  • Meets UL 181 and NFPA 90A-90B fire codes
  • Superior insulation and thermal performance
  • Easily shaped to fit over all inlets and quickly connects to fast fittings
  • Unique construction will not unravel when cut
  • Smooth air tight inner core of polyester is designed for low to medium pressure systems

Info & Guides

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Specifications

Dimensions

Product Depth (in.)
31
Product Diameter (in.)
10 in
Product Height (in.)
17
Product Length (in.)
300
Product Width (in.)
17

Details

Color
Silver Jacket
Insulated
Yes
Insulation R-Value
8.0
Insulator material
Other
Material
Fiberglass
Maximum air flow (CFM)
2900
Returnable
90-Day

Warranty / Certifications

Certifications and Listings
UL Listed

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 4
    out of 10 reviews
  • 75% recommend this product
Filter by:
Showing 1-10 of 10 reviews
Flex Duct First Timer
I used to add supply and return to attic bedroom. Easy to use, cut and install. Outer jacket was tough enough that I didn't worry about assembly outside the knee wall and dragging through the access door. After reading all about the draw backs of flex duct I did use ridge wall connectors at ends and any turns. Final result air flow is excellent to attic.
by
  • DIY
4 people found this helpful
Flex Duct first timer
I used to add supply and return to attic bedroom. Easy to use, cut and install. Outer jacket was tough enough that I didn't worry about assembly outside the knee wall and dragging through the access door. After reading all about the draw backs of flex duct I did use ridge wall connectors at ends and any turns. Final result air flow is excellent to attic. Showing 8 inch in the photo - but same construction.
by
  • DIY
  • Recommended
1 person found this helpful
Not As Pictured. Not even close to what is depicted in the pictures of the product, including on...
Not As Pictured. Not even close to what is depicted in the pictures of the product, including on the Thermaflex web site. I was hoping to find tightly wrapped ducting for my specific application, which I thought I had found with this product, per the picture displayed (silver is not loose at all, etc.). Plus, the seemingly compressed pink fiberglass was a plus and the inside black layer did not appear to be loose, thus a positive for the air flow that I needed. This product is primarily the same as the others I could have gotten off the shelf and would have already started my project. Silver exterior is very loose and ripplely, the fiberglass is the same "fuzzy" type as others, and the inside layer is not smooth / is loose, despite the picture. Perhaps the strength of the components May be better, but was not part of my criteria. Again, I recommend others just get another brand off the shelf at Home Depot instead of ordering and waiting for this to arrive.
by
    1 person found this helpful
    replaced a 25 foot r6 with a 5 deg diff,...
    replaced a 25 foot r6 with a 5 deg diff, now 1.5 deg diff. Check your ac vents with an inferred thermometer ($20), and replace if malfunctioning
    by
    • Verified Purchase
    Was as expected ...
    Was as expected
    by
    • Verified Purchase
    I hope it it’s better have not installed it yet...
    I hope it it’s better have not installed it yet 1 Star for now
    by
    • Verified Purchase
    1 person found this helpful
    This is a *cautious* recommendation for the Thermaflex KM 6 in. x 25 ft. R8 HVAC Ducting. The pro...
    This is a *cautious* recommendation for the Thermaflex KM 6 in. x 25 ft. R8 HVAC Ducting. The product itself is exactly as offered. The reason for my caution is that I only needed six feet, but HD or Thermaflex only offers this in a 25 ft. length. I would be very happy to pay half as much for a 6-10 foot length. 19 feet of wasted ducting does me little good.
    by
    • Verified Purchase
    • Recommended
    3 people found this helpful
    Great product. Easy to install...
    Great product. Easy to install
    by
    • Verified Purchase
    4 Star Review
    Rating provided by a verified purchaser
    by
    • Verified Purchase
    Super satisfied!
    Everything I expected this product to do, and more
    by
      • Recommended
      Showing 1-10 of 10 reviews