What does this adapter connect?

It joins a 3-inch round downspout to a 4-inch drain pipe. The flexible body lets it meet the pipe at most angles.

Do I need glue or tools to install it?

No. It is a friction fit that slides over the pipe ends. A clamp or screw helps hold it in place on long or buried runs.

Can it be buried underground?

Yes, the plastic suits buried drain tie-ins. Support the run so the flexible walls do not sag under soil.

Will it fit a standard rectangular downspout?

No. It is sized for 3-inch round downspout into 4-inch pipe, not rectangular gutter outlets.

Does it need a clamp?

Not always, but a clamp or screw is wise where the joint carries water underground or sees movement.

Where is the Flex-Drain 3'' X 4'' X 4'' Downspout Adapter cheapest?

At Walmart, for $11.65, as of our latest check.

What do buyers say about the Flex-Drain 3'' X 4'' X 4'' Downspout Adapter?

Rated 4.8 out of 5 from 20 ratings.

Flex-Drain 3'' X 4'' X 4'' Downspout Adapter

Best price now

$11.65at WalmartChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Walmart

Flex-Drain 3'' X 4'' X 4'' Downspout Adapter

Best price now

$11.65at WalmartChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $11.65 at Walmart on Nov 12.

Our take on the Flex-Drain 3'' X 4'' X 4'' Downspout Adapter

The Flex-Drain Downspout Adapter is a white corrugated plastic fitting that connects a 3-inch round downspout to a 4-inch drain line at the angles a run demands. Its flexible body bends to meet the pipe instead of forcing a rigid elbow, which is what most owners buy it for. It suits DIY gutter and drainage work where the run is not square. Rigid PVC elbows and metal adapters hold a fixed angle and need solvent welding or screws; this one trades that stiffness for give, and buyers rate it highly for fit and easy installation.

Best forDIY gutter and downspout reroutesConnecting 3-inch round downspout to 4-inch drain pipeRuns where the angle is not a standard elbowBuried or surface drainage tie-ins

Pros

Flexible body bends to fit most angles
Corrugated plastic resists cracking and rust
Slides over pipe without solvent or special tools
White finish blends with common gutter colors
Works for above-ground and buried drain runs

Cons

Corrugations can trap leaves and debris
Flexible walls may sag where unsupported
Friction fit can pull apart without a clamp or screw
Limited to 3-inch round to 4-inch connections

Flex-Drain 3'' X 4'' X 4'' Downspout Adapter prices at every store

WalmartNew
In stockSold by ShopNow18Returns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$11.65+ $5.99 shippingChecked Nov 12
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What reviewers say

4.8 / 520 ratings

Buyers rate it highly, with most praising how the flexible body solves odd angles that rigid fittings cannot. Complaints are few and center on debris collecting in the corrugations and the fit needing a clamp to stay put.

What people mention

FlexibilityPraisedOwners say the bendable body fits angles a rigid elbow cannot.
InstallationPraisedBuyers report it slides on quickly with no glue or special tools.
BuildPraisedReviewers describe the plastic as sturdy and weather-resistant.
DebrisCriticisedSome note the corrugations trap leaves and grit over time.
Fit securityMixedA few say the connection needs a clamp or screw to stay joined.

About the Flex-Drain 3'' X 4'' X 4'' Downspout Adapter

The Flex-Drain 3 in. x 4 in. It has a flexible construction that fits the majority of angles.

It is intended for DIY applications.

Brand: Flex-Drain
Size: 3 in. x 4 in. x 4 in.
Color: White
Construction: Flexible

Specifications

color: WhiteSource
size: 1Source

Questions and answers

What does this adapter connect?: It joins a 3-inch round downspout to a 4-inch drain pipe. The flexible body lets it meet the pipe at most angles.
Do I need glue or tools to install it?: No. It is a friction fit that slides over the pipe ends. A clamp or screw helps hold it in place on long or buried runs.
Can it be buried underground?: Yes, the plastic suits buried drain tie-ins. Support the run so the flexible walls do not sag under soil.
Will it fit a standard rectangular downspout?: No. It is sized for 3-inch round downspout into 4-inch pipe, not rectangular gutter outlets.
Does it need a clamp?: Not always, but a clamp or screw is wise where the joint carries water underground or sees movement.
Where is the Flex-Drain 3'' X 4'' X 4'' Downspout Adapter cheapest?: At Walmart, for $11.65, as of our latest check.
What do buyers say about the Flex-Drain 3'' X 4'' X 4'' Downspout Adapter?: Rated 4.8 out of 5 from 20 ratings.