Square to Round Metal Downspout Adapter

SKU DA2303
In stock
Product Details

Downspout drain square to round adapter

Available in copper, zinc, galvalume plus, 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.
the top and bottom portion extend past the dimensions A x B and C by 1" to act as tabs for securing this item.
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 customers don't even secure the top.


  • Height: 7"


  • Made to order
SizeABCDEF / Height
2"x3" to 3"3.25"2.125"2.5"1"1"8"
3"x3" to 3"3.125"3.125"2.5"1"1"8"
3"x4" to 3"4.25"3.125"2.5"1"1"8"
3"x4" to 4"4.25"3.125"3.5"1"1"8"
4"x5" to 4"5.5"4.125"3.5"1"1"8"
4"x5" to 5"5.5"4.125"4.5"1"1"8"
5"x5" to 4"5.25"5.25"3.5"1"1"8"
5"x5" to 5"5.25"5.25"4.5"1"1"8"
4"x6" to 4"6.25"4.25"3.5"1"1"8"
4"x6" to 5"6.25"4.25"4.5"1"1"8"
4"x6" to 6"6.25"4.25"5.5"1"1"8"
Submittals & Downloads
Color and Material Options
0.027" Aluminum Downspout Adapter 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 White (30°)

80° white 0.027

High Gloss White (80°)

Pac Clad Standard 0.032" Kynar® Aluminum and 24 Gauge Galvanized Steel Downspout Adapter Color Options
Black kynar aluminum

Black Aluminum

Matte black kynar steel

Matte Black Steel

Black kynar aluminum and galvanized steel

Charcoal Aluminum Steel

Dark bronze aluminum and galvanized steel

Dark Bronze Aluminum Steel

Medium bronze aluminum and galvanized steel

Medium Bronze Aluminum Steel

Copper penny aluminum and galvanized steel

Copper Penny Aluminum Steel

Almond aluminum and galvanized steel

Almond Aluminum Steel

Bone white aluminum and galvanized steel

Bone White Aluminum Steel

Atas Standard 0.032" Kynar® Aluminum and 24 Gauge Galvalume Steel Common Downspout Adapter Color Options
Kynar Black aluminum and steel

Black Aluminum Steel

Kynar Charcoal Grey aluminum and steel

Charcoal Grey Aluminum Steel

Kynar Classic Bronze aluminum and steel

Classic Bronze Aluminum Steel

Kynar Medium Bronze aluminum and steel

Medium Bronze Aluminum Steel

Kynar Coppertone Bronze aluminum and steel

Coppertone Aluminum Steel

Kynar Matte Almond aluminum and steel

Almond Aluminum Steel

Kynar Bone White aluminum and steel

Bone White Aluminum Steel

Common Material Options for Downspouts and Adapters


Pre Patina Copper

Pre Patina Copper

Freedom gray

Freedom Gray®

Galvalume Plus

Galvalume Plus

Lead coated copper

Lead Coated Copper



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

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