- 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
- See More Details
Frequently Bought Together
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Product Overview
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)
Info & Guides
Compare Similar Flexible Ductwork
|  |  |  | |
| Brand | Master Flow | Master Flow | Master Flow | Master Flow |
| Name | 6 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket | 9 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket | 12 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket | 14 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket |
| Price | ||||
| Ratings | (265) | (265) | (265) | (265) |
| Insulated | Yes | Yes | Yes | Yes |
| Maximum air flow (CFM) | 100.0 | 300 | 620.0 | 930 |
| Material | Fiberglass | Fiberglass | Fiberglass | Fiberglass |
| Product Diameter (in.) | 6 | 9 | 12 | 14 |
| View Product | View Product | View Product | View Product |
Compare Similar Flexible Ductwork
| | | | |
| Brand | Master Flow | Master Flow | Master Flow | Master Flow |
| Name | 6 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket | 9 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket | 12 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket | 14 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket |
| Price | ||||
| Ratings | (265) | (265) | (265) | (265) |
| Insulated | ||||
| Maximum air flow (CFM) | ||||
| Material | ||||
| Product Diameter (in.) | ||||
| View Product | View Product | View Product | View Product |
Specifications
Dimensions
Product Depth (in.)
300
Product Diameter (in.)
6
Product Height (in.)
10.5
Product Length (in.)
300
Product Width (in.)
10.5
Wall Thickness (in.)
2.25
Details
Color
Silver Jacket
Insulated
Yes
Insulation R-Value
8
Insulator material
Other
Material
Fiberglass
Maximum air flow (CFM)
100.0
Returnable
90-Day
Warranty / Certifications
Certifications and Listings
ETL Listed,UL Recognized
Questions & Answers
54Questions4Answers
Attn: Master Flow, do you all offer/make this 7” D duct with greater than an R8 r-value? If yes, ...
Asked by PotentialBuyer May 23, 20210
AnswersAttn: Master Flow, do you all offer/make this 6” D duct with greater than an R8 r-value? If yes, ...
Asked by PotentialBuyer May 23, 20210
AnswersAttn: Master Flow, do you all offer/make this 5” D duct with greater than an R8 r-value? If yes, ...
Asked by PotentialBuyer May 23, 20210
AnswersAttn: Master Flow, do you all offer/make this 4” D duct with greater than an R8 r-value? If yes, ...
Asked by PotentialBuyer May 23, 20210
AnswersAttn: Master Flow, do you all offer/make this 12” D duct with greater than an R8 r-value? If yes,...
Asked by PotentialBuyer May 23, 20210
AnswersAttn: Master Flow When connecting a single insulated flexible duct to an insulated metal supply p...
Asked by PotentialBuyer May 23, 20211
AnswerThe flexible ducts insulation can be sealed to the plenum/supply ducts insulation. Always use as approved method of connecting and sealing ductwork, local codes may take precedence. If you have any other inquiries about our Master Flow products please email warrantyllbp@gaf.com or call Technical Services at 800-211-9612, Mon- Fri, 8 am 5 pm EST.
Is the jacket made of aluminum foil?
Asked by Row May 21, 20211
AnswerThis does not have an aluminum foil jacket. If you have any other inquiries about our Master Flow products please email warrantyllbp@gaf.com or call Technical Services at 800-211-9612, Mon- Fri, 8 am 5 pm EST.
Is this ducting formaldehyde free? Thank you
Asked by Kathi March 21, 20210
AnswersCan this product be used to vent bathroom exhaust fan?
Asked by Trey February 7, 20211
AnswerYes, this can be used for a bathroom exhaust fan and other venting situations. If you have any other inquiries about our Master Flow products please call Technical Services at 800-211-9612.
I need 12" inside diameter by 10' long. is this the right duct?
Asked by Jim January 19, 20211
AnswerYou will need model F8IFD12X300, you will have to cut the flex to you desired length. If you have any other inquiries about our Master Flow products please call Technical Services at 800-211-9612.
Customer Reviews
Jun 14, 2011
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 feltonb20
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