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UnderGround Downspouts
Keep your foundation dry by preventing roof water runoff from entering the basement and causing long-term water damage.UnderGround Downspout Kit
Hidden downspout extension to manage roof water runoff.
$44.95
Overview
UnderGround Downspout is a downspout extension made to keep roof water away from your home’s foundation. Unlike traditional above-ground downspouts, this system removes any obstructions that lay across the lawn. You can even mow right over them!
Includes:Debris filter/ice guard, green lid, center post & bubbler pot (4″ thin wall drain pipe & elbow not included)
Dimensions & Specs
Bubbler Pot
Width: 9″
Height: 8″
Debris Filter
Overall Depth: 5-3/4″
Overall Height: 10″
Grill Width: 6″
Grill Height: 7-3/4″
Color: Black
Resources
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How Do UnderGround Downspout Kits Work?
UnderGround Downspouts run maintenance-free year-round to properly manage roof water runoff around your foundation. Keeping water away from your home’s foundation helps prevent a wet basement. Plus, they blend right into your landscaping and eliminate those annoying downspouts from above-ground extensions.

1. Debris filter removes bulk
As rain water and debris flow from the gutter system, leaves and twigs are filtered out at the debris filter. This allows only water to enter the underground downspout drain system.
2. Water flows to pot
Water flows through a 4-inch round solid PVC pipe (sold separately) that is pitched toward the bubbler pot. This underground piping ensures proper water flow away from the foundation wall.


3. Bubbler pot releases water
As the bubbler pot fills with water, the green pop-up lid lifts to release excess water. If the pot doesn’t fill, water drains from the bottom into a bed of rock added during installation.
ORDER UNDERGROUND DOWNSPOUT PARTS
Individual replacement parts are available for purchase.
HOW TO INSTALL
UnderGround Downspouts are easy to install yourself. The self-cleaning system runs maintenance-free year-round, preventing clogged underground drains and water damage. Install once and you’re done!
WHY UNDERGROUND DOWNSPOUTS?

WORKS WITH ANY STYLE OR SIZE DOWNSPOUT
The universal debris filter fits any gutter downspout. No special fittings or connectors are needed. Water flows smoothly into the underground system to manage roof water runoff efficiently.

WORKS YEAR ROUND FROM FREEZE TO THAW
In freezing climates, the debris filter doubles as an ice guard. Water free falls into the debris filter beneath the downspout creating an ice break. Unlike other products that connect directly to the downspout, this ice break prevents ice build-up in the downspout that could reach the roof line and create damage.

CAN MOW RIGHT OVER THEM
No need to move those annoying downspouts out of the way each time you mow. Simply mow right over them! The rugged, solid green lid can withstand the weight of a riding lawnmower.

SOLID LID KEEPS GRASS CLIPPINGS OUT
The solid, green lid keeps out grass clippings that can clog other underground systems with grate openings.

GREEN LID BLEND INTO LAWN
The green lid blends into your lawn, keeping the downspout extension hidden.

MAINTENANCE FREE
The self-cleaning design keeps the underground system running year-round without regular maintenance. Install once and you’re done! Bonus, you’ll never trip over a downspout laying across your lawn again!
FREQUENTLY ASKED QUESTIONS
Have a question about the UnderGround Downspouts? We have answers! Read through our frequently asked questions for more information about the UnderGround Downspout exterior drainage system.
How far away from my home can I install the Bubbler Pot?
Install the Bubbler Pot at least 8 feet away from the home. To extend further, adjust the pitch of the underground pipe for proper drainage. The pot sits 10-inches deep, so just up the height of the Debris Filter and elbow to create the proper pitch for the water to drain into the Bubbler Pot.
Can I use this in freezing cold climates?
Yes! Our company is based in Minnesota, so they are installed on all of our homes and run maintenance-free year-round. During the winter, the Debris Filter acts as the Ice Guard for the downspout by creating a break in the system, which prevents water from freezing vertically up the downspout.
What PVC pipe and elbow do I need for installation?
PVC pipe and elbow are NOT included in the kit but are needed for installation. We recommend a 4-inch thinwall downspout pipe. They are sold in 10-foot sections. Home Depot sells this solid pipe that we recommend.
You will also need a 90-degree elbow for your 4-inch PVC, also available at Home Depot.
We do not recommend corrugated pipes with the UnderGround Downspout.
How do I replace the green lid if need?
We offer replacement parts for the UnderGround Downspout Kit if needed. Here’s a short video on how to remove and replace parts:
REAL PEOPLE. REAL SUCCESS.
Trusted by homeowners and contractors to manage roof water runoff around the basement.
Great product.
Great product and service from this company. We have these installed a few years ago on two downspouts and they work great so we just order 9 more….
The Bubbler pop up assembly is a wonderful way to get rainwater away from your home. Once you install this device you can mow over it even with a zero-turn mower without breaking the top.
Great product. I’ve used the down spout system for 30 years.
Would buy again.
High quality, easy replacement, quick delivery, would buy again.
Exactly what I was looking for to replace an unsightly downspout!
The down spout works amazing. All you need is some pipe and an elbow and some rocks. Better design than any other I’ve seen.
ORDER BULK CARTONS
We offer bulk carton pricing on our UnderGround Downspouts, ideal for contractors and landscapers. If you have any questions about bulk purchasing please contact us.
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Member Discount
UnderGround Downspout Kits (Bulk Carton of 12)
$299.80 Add to cart -
Member Discount
Debris Filter / Ice Guard (Bulk Carton of 48)
$499.80 Add to cart -
Member Discount
Bubbler Pop-Up Assembly (Bulk Carton of 18)
$380.80 Add to cart