6 in. x 25 ft. Insulated Flexible Duct R4.2 Silver Jacket, 6 - Flexible Ductwork - Ducting & Venting
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Availability:
In Stock.
Arrives
Thursday, Mar 19
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Size: 6 IN 25 FT
Color: R-4.2 Insulation
Features
- High-quality performance 6 insualted ductMade of thickened aluminum foil material and made of high-strength elastic spiral steel wire.The middle is covered with glass fiber insulation layer, which has high temperature resistance, acid and alkali resistance, and flame retardancy.
- Owens Corning Glass Wool Insualtion Glass wool Insualtion is the safest building material, with high corrosion resistance and thermal insulation,R value: R-4.2. The temperature resistance range is -4C~454C.
- Sound absorption and noise reduction insulation The internal structure of glass wool insulationis fluffy and the overall density is large, which can absorb the sound in time,Noise can be reduced by up to 85%.
- 6 inch Flexible Duct It can be bent arbitrarily, without rigid elbows, the aluminum foil is self-sustaining and will not retract after installation.It can maintain the flatness in the tube and reduce the wind resistance.
- Multi FunctionUsed for high, medium and low pressure ventilation system without corrosive gas. Mainly used in central air conditioning HVAC system,Fresh air ventilation systems, mechanical equipment recovery systems and other ventilation systems that do not contain corrosive gases, etc.
Material: Aluminum, Fiberglass
Brand: Cuchiilo
Recommended Uses For Product: ventilation systems, air conditioning, and heating systems
Product Dimensions: 300"L x 6"W
Manufacturer: Cuchiilo
Manufacturer: Cuchiilo
Item Weight: 8.51 pounds
Product Dimensions: 300 x 6 x 0.04 inches
Size: 6 IN 25 FT
Color: R-4.2 Insulation
Material: Aluminum, Fiberglass
Item Package Quantity: 1
Coverage: 549.78 square feet
Batteries Included?: No
Batteries Required?: No
Date First Available: November 23, 2023
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Mar 19
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: 6 IN 25 FT
Color: R-4.2 Insulation
Works well and seems well built.
Reviewed in the United States on January 15, 2026 by Duke Thor Dunn
Size: 10 IN 25 FT
Color: R-4.2 Insulation
The inner "foil" layer was much tougher than another reviewer said. It's more of a "mylar" plastic silver mirror kind of material. I only needed 15 to 17 feet, so I didn't mind ruining the end I attached to a rope for pulling through the hordes of black widows and rattlers. The insulation is as expected. I did tear the outer layer just a tiny bit pulling it with a rope I'd fish-taped through a confined crawlspace trench I had to hand-excavate. Attaching it firmly to the flanges worked well however the Hose Clamp, or Radiator Clamp style items supplied were some metric size I had no socket bit for. So, picture a guy on his back in dirt with spider webs hanging down trying to use a flathead driver on his drill to tighten a long long long clamp. One spider said: Hey, how-ya-doin?" I have patience. I attached it to one flange from inside the home, the other from underneath. Both ends were easier than expected. This is a quality product, but fragile as you might imagine. Be careful of it and it's tough enough and a good value.
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Reviewed in the United States on December 17, 2024 by Mark Mark
Size: 4 IN 25 FT
Color: R-4.2 Insulation
Works as expected. Doesn’t tear easy during installation. Exactly what I needed to install an insulated duct through my unconditioned attic space.
Reviewed in the United States on March 4, 2026 by Malibu
Size: 6 IN 25 FT
Color: R-4.2 Insulation
Needed to extend a register in the basement and this worked for the purpose. Much cheaper than alternatives, but the material is a little think and tears easier than a name brand product. Worked for my purpose, but just be careful when slipping over the fitting.
Reviewed in the United States on April 18, 2025 by Captain Sensible
Size: 6 IN 25 FT
Color: R-4.2 Insulation
Not much to say here: it’s 6" insulated flexible ducting, and it did the job perfectly. Easy to work with, solid insulation, and exactly what I needed for my project. Sometimes you just need something that works without any drama—and this delivered. Five stars!
Reviewed in the United States on November 28, 2025 by Don
Size: 12 IN 25 FT
Color: R-4.2 Insulation
The liner inside is very thin tears easily when hooking to duct boots or supply take offs
Reviewed in the United States on February 26, 2026 by KYLE FRIZZELL
Size: 4 IN 25 FT
Color: R-4.2 Insulation
Easy to use and cut, the length and size was as discribed
Reviewed in the United States on December 9, 2025 by Ashley
Size: 8 IN 25 FT
Color: R-4.2 Insulation
Excellent product. Works awesome with the Mr. Heater
Reviewed in the United States on November 3, 2025 by De A.