Model # F8IFD8X300

Internet #202562741

Store SKU #812305

Store SO SKU #1000684564

0050206029244

Master Flow

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

$ 51 86

Overview

The Master Flow 8 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.
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Frequently Bought Together

Frequently Bought Together

Product Overview

The Master Flow 8 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 200°F
  • Always install per instructions and seal using approved mastic or sealant (or approved tape)

Product Overview

Model #: F8IFD8X300
Sku #: 812305
Internet #: 202562741

The Master Flow 8 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 200°F
  • Always install per instructions and seal using approved mastic or sealant (or approved tape)

Info & Guides

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Specifications

Dimensions

Product Depth (in.)
300
Product Diameter (in.)
8.0 in
Product Height (in.)
12.5
Product Length (in.)
300
Product Width (in.)
12.5
Wall Thickness (in.)
2.25

Details

Color
Silver Jacket
Insulated
Yes
Insulation R-Value
8
Insulator material
Other
Material
Fiberglass
Maximum air flow (CFM)
200.0
Returnable
90-Day

Warranty / Certifications

Certifications and Listings
2-UL Recognized,ETL Listed

Specifications

Dimensions

Product Depth (in.)
300
Product Diameter (in.)
8.0 in
Product Height (in.)
12.5
Product Length (in.)
300
Product Width (in.)
12.5
Wall Thickness (in.)
2.25

Details

Color
Silver Jacket
Insulated
Yes
Insulation R-Value
8
Insulator material
Other
Material
Fiberglass
Maximum air flow (CFM)
200.0
Returnable
90-Day

Warranty / Certifications

Certifications and Listings
2-UL Recognized,ETL Listed

Questions & Answers

Mobile home

Can this be installed underneath mobile home No insulation under my mobile home Now Will i need to insulate it later after installing this?
Asked by: Anderson
You can use this. There is no need to insulate after installing. This is the highest insulation rated ducting you can buy.
Answered by: TJ
Date published: 2018-03-15

Can this be used to replace a PVC pipe connected to a bathroom exhaust fan running up to the roof?

Can this be used to replace a PVC pipe connected to a bathroom exhaust fan running up to the roof?
Asked by: slwf
No, Non insulated 3 or 4 in. Snap together pipe is adequate.
Answered by: Nick
Date published: 2018-12-28

I water gets into the ducting through floor vent can it grow mold?

I water gets into the ducting through floor vent can it grow mold?
Asked by: Mateo
It is “possible” for mold to grow in this and attached areas if several conditions exist. The interior of this product is made of plastic. Since plastic does not provide the ideal growth conditions, mold will usually not colonize, multiplying to cover a large surface area, but it can still germinate and produce fumes and even toxins. Top 5 indoor environmental conditions absolutely necessary for mold to grow and flourish: 1 – Water-Every mold study identifies water (or moisture) as the prime requirement and causative agent for mold growth. Indeed, water is like a disease to any indoor environment. 2 – Temperature – when it’s warm enough, mold will grow! The magic temperature required for mold to grow is 50° Fahrenheit. 3 – Moving Air – Since mold is a living, breathing organism, it needs air to survive and grow. 4 – Carbohydrates – Organic food is needed for mold to grow, e.g., wood, cloth, paper, gypsum, glues, grout, some silicone. 5 – Seeing it and/or smelling it – the best detection tools – your eyes and nose. If you see anything that concerns you – or if you smell a musty, “mildew” odor – it’s a good sign you may have a mold issue.
Answered by: Jack
Date published: 2018-12-01

Does this product meet California / San diego building code

Asked by: Woody
It depends on your title 24 and what the engineer requires. They put very specific requirements.
Answered by: CaliDIYKing
Date published: 2018-11-27
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Customer Reviews

8 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket is rated 4.9 out of 5 by 28.
Rated 4 out of 5 by from It's Insulated Duct. What can you say about insulated duct? It is used in homes starting at the furnace plenum. Wish that weren't true. In many cases it doesn't need to be insulated since basements are often finished.In my opinion, the length should be limited to 15 feet by code in conditioned spaces but no one seems to have a clue about hard piped duct anymore in residential and not all the pieces needed are sold by the Home Depot to do that kind of work properly.. One big negative is that people crush the insulated flex duct to get around some clearance issue where rectangular hard duct would solve the problem. Then they wonder why the room gets hot or cold. So the product is okay and the insulation seems to be good quality (and is now thicker and more effective in attics). No reason not to buy it. Make sure you connect it properly with tie wraps in addition to foil tape and also one or two screws through the tie wrap to make it even better. That is what folks do in commercial work. And consider "saddles" and the correct strapping to prevent restrictions where the duct sags.
Date published: 2015-03-24
Rated 5 out of 5 by from Easy to install. ... Easy to install.
Date published: 2019-05-07
Rated 5 out of 5 by from Replacing all Ducts, Insulation, and Plenum in a 35-year old attic. This duct is very easy to wo... Replacing all Ducts, Insulation, and Plenum in a 35-year old attic. This duct is very easy to work with and is easy to cut ... just need wire cutters for the circular wire. I recommend replacing the plenum too ... for older homes. I made one with a few small sheets of duct board, appropriate sized collars. metal flex tape and good Mastic [Master Flow]. Just give it a few days to 'dry' prior to final installation. I added 2-additional [small] return vents [same duct size] then added 2-layers or R-38 batt insulation atop. R-12 [existing] + R-76 = R-80++. Honestly, The temperature in the 2nd Story has decreased by 6-7 degrees here in Tampa, Florida. It's February ... wonder what the savings will be this summer ! A/C Cycles a lot less too ! Why not replace it all ... not too expensive ... but a worthwhile investment ! Utility companies offer rebates too !.
Date published: 2018-02-25
Rated 5 out of 5 by from This 8” flex was exactly what I needed to complete... This 8” flex was exactly what I needed to complete my attic HVAC project. Nothing better than having clean, new ducts feeding air to the bedrooms.
Date published: 2019-02-12
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2019-02-21
Rated 5 out of 5 by from Good product and easy to work with.... Good product and easy to work with.
Date published: 2019-01-22
Rated 5 out of 5 by from Works perfectly as expected. ... Works perfectly as expected.
Date published: 2018-12-11
Rated 5 out of 5 by from WOULD USE AGAIN... WOULD USE AGAIN
Date published: 2019-02-12
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