What sizes does this adapter connect?

It joins a 3-inch by 4-inch downspout outlet to a 4-inch round or corrugated drain pipe. Check both ends of your run before ordering.

It is a transition adapter, not a buried drain fitting. Keep it above grade or at the soil line and run a proper buried pipe below it.

Will it fit a standard rectangular downspout?

It fits 3x4-inch rectangular downspouts. A 2x3-inch downspout is too small and needs a different adapter.

Can I cut it to length?

Yes. The corrugated plastic can be trimmed with a utility knife to shorten the bend or fit a tighter space.

Does it need clamps or screws?

It pushes onto the downspout and pipe. For a secure hold, add sheet-metal screws or a clamp at each joint.

Is it better than a rigid elbow?

It is easier to align and needs fewer joints. A rigid metal elbow is sturdier where the run is straight and exposed to impact.

Flex-Drain 53127 Flexible Downspout Extension Adapter, 3 by 4 by 4-Inch, White

Best price now

$14.11at WalmartChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Walmart

Flex-Drain 53127 Flexible Downspout Extension Adapter, 3 by 4 by 4-Inch, White

Best price now

$14.11at WalmartChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $14.11 at Walmart on Nov 12.

Our take on the Flex-Drain 53127 Flexible Downspout Extension Adapter, 3 by 4 by 4-Inch, White

The Flex-Drain 53127 is a flexible adapter that connects a 3-inch by 4-inch downspout to a 4-inch drain pipe or extension. Its corrugated body bends to follow the run of the wall or grade, so it takes the place of rigid elbows and fittings at the transition. It suits homeowners rerouting a gutter outlet toward a drain, splash block or buried line. Against rigid metal adapters it trades some stiffness for easier alignment and fewer joints, but the plastic build is lighter duty than metal and the white finish shows dirt over time.

Best forConnecting a 3x4 downspout to a 4-inch drain lineRerouting a gutter outlet around a corner or grade changeHomeowners replacing rusted or rigid metal fittings

Pros

Flexible body bends to fit awkward angles
Joins 3x4 downspout to 4-inch pipe in one piece
Corrugated plastic resists rust
Light and easy to cut or trim to length
Simple push-on installation

Cons

Plastic is less rigid than metal adapters
White color shows dirt and staining
Flexible walls can sag if unsupported
Not intended for high-pressure or buried-only use