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Thermwell Products DE300 Flexible Manual Downspout Extender 12' - Green (Pack of 3) by Frost King

3.3 out of 5 stars 82 ratings
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Brand Frost King
Colour Green
Material Plastic
Finish type Matte
Product Dimensions 18.3W x 366H Centimetres
Style Modern
Number of Items 3
Manufacturer Thermwell Products
UPC 077578057576

About this item

  • Thermwell Products DE300 Flexible Manual Downspout Extender 12' - Green (Pack of 3)
  • 12' ft x 7"
  • Green

Frequently bought together

Thermwell Products DE300 Flexible Manual Downspout Extender 12' - Green (Pack of 3) by Frost King
This item: Thermwell Products DE300 Flexible Manual Downspout Extender 12' - Green (Pack of 3) by Frost King
$35.00($11.67/count)
FREE Delivery
In Stock
Sold by SWIFTCHOICE and ships from 鶹 Fulfillment.
+
Frost King DE300 Standard Plastic Drain Away Downspout Extender, Extends 12', Green
$21.99
Get it by Tuesday, Jul 8
In Stock
Sold by Express Health Supply and ships from 鶹 Fulfillment.
Total price:$00
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Product description

Quantity of 3: Frost King 12 foot x 7 Green Flexible Manual Downspout Extenders;Takes Water Away From Foundation, Helps Reduce Washouts, Puddles and Gullies;Trim To Any Length With Scissors, Installs Easily Without Tools;Unrolls Automatically When It Rains, Roll Back Up Manually To Get It Out of The Way of Lawn Mowing;Made in USA

Product information

Technical Details

Manufacturer ‎Thermwell Products
Part Number ‎DE300
Product Dimensions ‎18.29 x 18.29 x 365.76 cm; 68.04 g
Item model number ‎DE300
Is discontinued by manufacturer ‎No
Size ‎12' ft x 7"
Colour ‎Green
Style ‎Modern
Finish ‎Matte
Material ‎Plastic
Item Package Quantity ‎3
Batteries Included? ‎No
Batteries Required? ‎No
Item Weight ‎68 g

Additional Information

ASIN B0134JSEN8
Customer Reviews
3.3 out of 5 stars 82 ratings

3.3 out of 5 stars
鶹 Rank
Date First Available March 29 2016

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Thermwell Products DE300 Flexible Manual Downspout Extender 12' - Green (Pack of 3) by Frost King

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Customer reviews

3.3 out of 5 stars
82 global ratings

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Customers say

Customers like the functionality of the drain strainer. However, some customers have reported that it doesn't stay rolled up and has to be hand-rolled.

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FunctionalityRolling mechanism
4 customers mention "Functionality"4 positive0 negative

Customers like the functionality of the drain strainer. They mention it works great.

"Comes 3 in a pkg which is nice. Definitely works but plastic likely won't last for more than one year...." Read more

"Work's as advertised. Having to reroll every time is a pain, but they work and the lawn is free of pipes." Read more

"Works great..." Read more

"Works as expected..." Read more

3 customers mention "Rolling mechanism"0 positive3 negative

Customers are dissatisfied with the rolling mechanism of the drain strainer. They mention it doesn't stay rolled up and the wind catches them and they have to be hand-rolled.

"Thin plastic, no weight to it. Doesn't "automatically" roll out. Don't waste your money." Read more

"...These have to be hand rolled. If you live where it rains frequently this would be very annoying!" Read more

"They don't stay rolled up and the wind catches them and they're gone and then you don't have your water routed to where you wanted it" Read more

Top reviews from Canada

  • 鶹 Customer
    5.0 out of 5 stars Works great
    Reviewed in Canada on June 23, 2024
    Verified Purchase
    These rolled out perfectly and were easy to roll right back up. So far great purchase. My husband loved them
    Helpful
     Report
  • Dylan Bailey
    1.0 out of 5 stars Disappointing 😞
    Reviewed in Canada on April 14, 2024
    Verified Purchase
    Thin plastic, no weight to it. Doesn't "automatically" roll out. Don't waste your money.
    Helpful
     Report
  • KH
    3.0 out of 5 stars This is a disposable solution
    Reviewed in Canada on May 26, 2023
    Verified Purchase
    Comes 3 in a pkg which is nice. Definitely works but plastic likely won't last for more than one year. Our older models had a plastic spool that rolled out back up. These have to be hand rolled. If you live where it rains frequently this would be very annoying!
    Helpful
     Report
  • mary
    5.0 out of 5 stars Easy to install
    Reviewed in Canada on April 21, 2024
    Verified Purchase
    Easy to put on and didn't realize that there were 2!
    Helpful
     Report
  • Mike M.
    4.0 out of 5 stars Works as expected
    Reviewed in Canada on September 9, 2023
    Verified Purchase
    Little pricey but nice to have a backup as they don't last forever
    Helpful
     Report
  • Tanna Cole
    5.0 out of 5 stars Excellent quality
    Reviewed in Canada on July 3, 2023
    Verified Purchase
    As advertised, perfect to keep water away from the foundation.
    Helpful
     Report
  • Scully
    1.0 out of 5 stars Waste of money
    Reviewed in Canada on June 20, 2023
    Verified Purchase
    They don't stay rolled up and the wind catches them and they're gone and then you don't have your water routed to where you wanted it
    Helpful
     Report
  • Marian Wythe
    3.0 out of 5 stars Good Alternative
    Reviewed in Canada on April 21, 2023
    Verified Purchase
    Work's as advertised. Having to reroll every time is a pain, but they work and
    the lawn is free of pipes.
    Helpful
     Report

Top reviews from other countries

  • nandan69
    5.0 out of 5 stars Great temporary solution
    Reviewed in the United States on October 12, 2019
    Verified Purchase
    This last spring we had a disastrous flood under our house. This resulted in a $4,000 replacement of our ducting system. I have since purchased under-the-house water sensors, a sump pump, and these downspout extenders to drain water away from the foundation. So far, we have had a half dozen rain storms and no water under the house. I was surprised at how easy these extenders installed and how well the twist ties held the extenders to the downspout. As soon as the rain starts the water easily unrolls the extender and drains it at least 10 feet away from the house.
    In some cases the extender goes across a sidewalk. My initial concern was a trip hazard. This is not really a problem with these things, because after the rain storm they deflate to an almost completely flat surface. As others have said, I wish they rolled themselves back up after the rain, because we were recently away for two weeks, and one of the extenders was allowed to sit on the grass for that time causing a yellow patch due to lack of sunlight. So, I have a ritual of hand rolling each of them back to the downspout, and they dutifully wait for the next rainstorm to roll back out and do their job of expelling water at a safe distance.
    So, for now, these are a great cheap temporary solution. I am already planning for next summer's project of digging up the lawn and tunneling under sidewalks to install a more permanent diversion drain, but for now, so far, problem solved.
    Report
  • dock richardson
    4.0 out of 5 stars Works great does the job
    Reviewed in the United States on August 3, 2022
    Verified Purchase
    The only problem is the wind which moves it all over and you have to roll it back up.
    Does exactly what it says will do
    Report
  • William Blackwell
    1.0 out of 5 stars Too flimsy and overpriced
    Reviewed in the United States on May 30, 2024
    Verified Purchase
    Junk
    Report
  • Charles B. Moran Jr.
    2.0 out of 5 stars Lasts for about 6 months in central Florida sunlight
    Reviewed in the United States on February 24, 2025
    Verified Purchase
    We live in central Florida. We have hot temperatures for much of the year. We also have more direct UV rays. These rain sleaves began to disintegrate after about 6 months. They might last longer if you live further north or if they are used in an area of your house that is mostly in shade. On the other hand, I might get them again for our next rainy season, now that I understand for me, they need to be treated as a disposable item.
    Report
  • worldtrvlr2003
    5.0 out of 5 stars good product
    Reviewed in the United States on May 21, 2020
    Verified Purchase
    These were easy to install. Thicker than what I expected. Thicker than a trash bag. And have managed to work even though the wind whips them around and I do drive over it, every day for the last month
    Report