Square to Round Metal Downspout Adapter

SKU DA230300
In stock
Product Details

Downspout drain square to round adapter

Available in copper, zinc, galvalume, colored aluminum and steel

If you're looking for something better than those ugly plastic downspout adapters we have what you need. Our custom made metal downspout adapters work with connecting square or rectangular down pipes with several different sizes of drain pipes.
An adapter for a gutter pipe works by changing the size of the downspout used. It connects a square or rectangular downspout to a round one.
Although there are circumstances in which there are 2 different size downspouts, this is mostly used on situations when connecting a gutter downspout to a sewer line pipe or a runoff area pipe, both of which are normally round.
Custom colors, sizes and materials are available as custom items. Please, contact us for a quote.


1 - Cut the downspout to receive the adapter. Make sure to not cut too much. The bottom portion of the adapter is flexible and smaller than the circumference of the pipe, like a funnel, and will slide down quite a bit in place.
2 - Place the adapter in place.
3 - Secure the 1" vertical portion of your adapter to the downspout with rivets, screws or by soldering. You may choose to secure the bottom portion as well or not depending on your application. We recommend both top and bottom to be secured, if possible, although some users don't even secure the top.


  • Height: 7"


  • Made to order
Size A B C D E / Height
2"x3" to 3" 2.125" 3.25" 2.5" 1" 7"
3"x3" to 3" 3.125" 3.125" 2.5" 1" 7"
3"x4" to 3" 3.125" 4.25" 2.5" 1" 7"
3"x4" to 4" 3.125" 4.25" 3.5" 1" 7"
4"x5" to 4" 4.125" 5.5" 3.5" 1" 7"
4"x5" to 5" 4.125" 5.5" 4.5" 1" 7"
5"x5" to 4" 5.25" 5.25" 3.5" 1" 7"
5"x5" to 5" 5.25" 5.25" 4.5" 1" 7"
4"x6" to 4" 4.25" 6.25" 3.5" 1" 7"
4"x6" to 5" 4.25" 6.25" 4.5" 1" 7"
4"x6" to 6" 4.25" 6.25" 5.5" 1" 7"
0.027" Aluminum Conductor Heads and Leader Heads Color Options
Black 0.027


Dark bronze 0.027

Dark bronze

Musket Brown 0.027

Musket Brown

Royal brown 0.027

Royal brown

Almond 0.027


Linen 0.027


30° white 0.027

Low Gloss (30°) White

80° white 0.027

High Gloss (80°) White

0.032" Kynar Aluminum and 24 Gauge Galvanized Steel Conductor Heads and Leader Heads Color Options
Black kynar aluminum and galvanized steel

Matte black

Dark bronze aluminum and galvanized steel

Dark bronze

Medium bronze aluminum and galvanized steel

Medium bronze

Almond aluminum and galvanized steel


Stone white aluminum and galvanized steel

Stone white

Bone white aluminum and galvanized steel

Bone white

Common Material Options for Leader Heads



Pre Patina Copper

Freedom gray

Freedom gray



Lead coated copper

Lead coated copper



Other colors, materials and thickness may be available upon request.
Please click here for a full selection of colors and materials offered.

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