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51001 has been discontinued
Discontinued June 3, 2025
This product was discontinued by the manufacturer.
MANUALS (1)
Direct Replacement:
4" x 25' F114 Insulated Flex Duct (Gray Jacket)
Product Highlights
–
25' Length
4" Diameter
Polyester
R-4.2
Description
–
Features:
Gray polyester jacket
Double-ply black polyester core 10" W.C. positive, 1/2" W.C. negative
R-4.2 formaldehyde free insulation
UL listed
Boxed or bagged (FB series)
GREENGUARD Listed for microbial resistance
Specs
–
| Length (Feet): | 25' |
|---|---|
| Diameter (Inches): | 4" |
| Application: | HVAC |
| Core Type: | Double Ply Black Polyester |
| Material: | Polyester |
| Insulation: | R-4.2 |
| Type: | Venting |
| Package: | Boxed |
Questions?
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Call or text 888-757-4774
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Product Reviews
4.57 out of 14 reviews
92% would recommend this product
5 star
79%
4 star
14%
3 star
0%
2 star
0%
1 star
7%
Customer Images
Most Liked Positive Review
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Good for this application of bathroom vent
I could have used a little more information with tips on how to use it.
Taping the loose wire end after cutting a section makes life easier.
One might want to have a video camera on when opening the box.
VS
Most Liked Negative Review
Garbage product but Supply House cancelled the charges
We stretched out the 14" duct, but part of it seemed to be collapsed. Upon further checking, the inner plastic liner had a rip in it and the coil which supported it had retracted providing no support.
Supply House made it right though. I was set to return it and they told me that I didn't have to and reversed the charges. I'd still buy from them because they have super fast shipping and friendly customer service.
Showing 1-10 of 14 reviews
I would buy this product again
Product was shipped as advertised, was much better quality than the local outlets had. Would definitely order from this company again..
Mike
Santa Rosa
8 months ago
Verified Buyer
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Exactly what I needed
I used this to create a duct from a swamp cooler to a window opening and it is way more efficient than any other product i tried. the insulation makes a huge difference.
Joe
Las Vegas
10 months ago
Verified Buyer
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Garbage product but Supply House cancelled the charges
We stretched out the 14" duct, but part of it seemed to be collapsed. Upon further checking, the inner plastic liner had a rip in it and the coil which supported it had retracted providing no support.
Supply House made it right though. I was set to return it and they told me that I didn't have to and reversed the charges. I'd still buy from them because they have super fast shipping and friendly customer service.
Mr. Boo
Hudson, NY
12 months ago
Verified Buyer
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Product and retailer are the best!
Needed new duct work, ordered wrong size. Completed return and received size needed. These guys made it super simple to return and get the product I needed. Works great and MUCH cheaper than all the other places.
TWay
WV
1 years ago
Verified Buyer
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I would buy this product again
Used it for a return in the attic. You can tell it wasn't cheap material.
Nick
New York
2 years ago
Verified Buyer
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Served it's purpose
Replaced a return line. Good heavy duty product, on time delivery, and best price. Thx
Keith
Memphis, Tn
3 years ago
Verified Buyer
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7" duct
Hard to find this size locally but was able to get it at Supply House with fast delivery. Good quality.
Mike
Brewster NY
3 years ago
Verified Buyer
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i would buy this again
just what it says it is
Rquig
Pa
4 years ago
Verified Buyer
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Good for this application of bathroom vent
I could have used a little more information with tips on how to use it.
Taping the loose wire end after cutting a section makes life easier.
One might want to have a video camera on when opening the box.
dougn6tqs
Oakland
6 years ago
Verified Buyer
Was this review helpful to you?
Product as described, works as expected.
Really a pleasure to work with Supply House - amazingly fast accurate shipping, very flexible customer service when I needed to change my order. Easy returns when I bought the wrong item. I would highly recommend Supply House
Rob
New Jersey
6 years ago
Verified Buyer
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Product Q&A
1 Question1 Question
Q: Does this product come in other sizes? I am getting a new Furnace that is 97.3% efficient. I have been told to upsize my existing ducts one size 4" to 6", 6" to 8", 8" to 10" and 10" to 12 "
Asked by stukn69 8 years ago
Add your answer
Verified Reply- Hello, Please see the following link: https://www.supplyhouse.com/Black-Polyethylene-Jacket-Air-Ducts-14720000 for all available Diameter Sizes.
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