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Galvanized Steel Downspouts | Rectangular Downspouts | Gutter Supply
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Rectangular Downspouts

Rectangular Downspout diameters are sized according to the roof area they drain.

The following is the rule of thumb used in the industry:

2x3 inch downspout for 600 sq. ft. of roof
3x4 inch downspout for 1200 sq. ft. of roof
4x5 inch downspout for 2000 sq. ft. of roof

The typical downspout size for a
5 K Style


Products In This Category:
Product Code Description Material Retail Price Qty.
GADSX23G26X
2x3 Downspout Galvanized 26 GA $24.40 / 10FT
GADSX34G26X
3x4 Downspout Galvanized 26 GA $30.20 / 10FT
GADSX45G26X
4x5 Downspout Galvanized 26 GA $44.40 / 10FT

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