Rectangular Downspouts

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Rectangular Aluminum Downspout

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 gutter is 2x3 inches, but 3x4 inches is preferable because it is less likely to become clogged and is easier to clean out.

Products In This Category:

Product Code	Description	Material	Retail Price
ALDSX23A019	2x3 Downspout	Almond Aluminum .019	$8.77 / 10ft
BBDSX23A019	2x3 Downspout	Buckskin Brown Aluminum .019	$8.77 / 10ft
BLDSX23A019	2x3 Downspout	Black Aluminum .019	$8.77 / 10ft
BVDSX23A019	2x3 Downspout	Beaver Brown Aluminum .019	$8.77 / 10ft
CBDSX23A019	2x3 Downspout	CB Gray Aluminum .019	$8.77 / 10ft
CLDSX23A019	2x3 Downspout	Clay Aluminum .019	$8.77 / 10ft
CRDSX23A019	2x3 Downspout	Cream Aluminum .019	$8.77 / 10ft
GGDSX23A019	2x3 Downspout	Grecian Green Aluminum .019	$8.77 / 10ft
HBDSX23A019	2x3 Downspout	Herringbone Aluminum .019	$8.77 / 10ft
HGDSX23A019	2x3 Downspout	HG White Aluminum .019	$8.77 / 10ft
IVDSX23A019	2x3 Downspout	Ivory Aluminum .019	$8.77 / 10ft
LNDSX23A019	2x3 Downspout	Linen Aluminum .019	$8.77 / 10ft
MBDSX23A019	2x3 Downspout	Musket Brown Aluminum .019	$8.77 / 10ft
PGDSX23A019	2x3 Downspout	Pearl Gray Aluminum .019	$8.77 / 10ft
RBDSX23A019	2x3 Downspout	Royal Brown Aluminum .019	$8.77 / 10ft
REDSX23A019	2x3 Downspout	Red Aluminum .019	$8.77 / 10ft
TGDSX23A019	2x3 Downspout	Tuxedo Gray Aluminum .019	$8.77 / 10ft
WHDSX23A019	2x3 Downspout	White Aluminum .019	$8.77 / 10ft
WIDSX23A019	2x3 Downspout	Wicker Aluminum .019	$8.77 / 10ft
BRDSX23A019	2x3 Downspout	Bronze Aluminum .019	$8.77 / 10ft
CPDSX23A019	2x3 Downspout	Copper Penny .019 Aluminum	$20.22 / 10 ft
ALDSX34A019	3x4 Downspout	Almond Aluminum .019	$13.80 / 10ft
BBDSX34A019	3x4 Downspout	Buckskin Brown Aluminum .019	$13.80 / 10ft
BLDSX34A019	3x4 Downspout	Black Aluminum .019	$13.80 / 10ft
BRDSX34A019	3x4 Downspout	Bronze Aluminum .019	$13.80 / 10ft
BVDSX34A019	3x4 Downspout	Beaver Brown Aluminum .019	$13.80 / 10ft
CBDSX34A019	3x4 Downspout	CB Gray Aluminum .019	$13.80 / 10ft
CLDSX34A019	3x4 Downspout	Clay Aluminum .019	$13.80 / 10ft
CRDSX34A019	3x4 Downspout	Cream Aluminum .019	$13.80 / 10ft
GGDSX34A019	3x4 Downspout	Grecian Green Aluminum .019	$13.80 / 10ft
HBDSX34A019	3x4 Downspout	Herringbone Aluminum .019	$13.80 / 10ft
HGDSX34A019	3x4 Downspout	HG White Aluminum .019	$13.80 / 10ft
IVDSX34A019	3x4 Downspout	Ivory Aluminum .019	$13.80 / 10ft
LNDSX34A019	3x4 Downspout	Linen Aluminum .019	$13.80 / 10ft
MBDSX34A019	3x4 Downspout	Musket Brown Aluminum .019	$13.80 / 10ft
PGDSX34A019	3x4 Downspout	Pearl Gray Aluminum .019	$13.80 / 10ft
RBDSX34A019	3x4 Downspout	Royal Brown Aluminum .019	$13.80 / 10ft
REDSX34A019	3x4 Downspout	Red Aluminum .019	$13.80 / 10ft
TGDSX34A019	3x4 Downspout	Tuxedo Gray Aluminum .019	$13.80 / 10ft
WHDSX34A019	3x4 Downspout	White Aluminum .019	$13.80 / 10ft
WIDSX34A019	3x4 Downspout	Wicker Aluminum .019	$13.80 / 10ft
CPDSX34A019	3x4 Downspout	Copper Penny .019 Aluminum	$25.11 / 10 ft
RBDSX45AXXX	4x5 Downspout	Royal Brown Aluminum .027	$47.80 / 10ft
WHDSX45AXXX	4x5 Downspout	White Aluminum .027	$47.80 / 10ft
BLDSX45A027	4x5 Downspout	Black Aluminum .027	$47.80 / 10ft
HGDSX45A027	4x5 Downspout	HG White Aluminum .027	$47.80 / 10ft
MBDSX45A027	4x5 Downspout	Musket Brown Aluminum .027	$47.80 / 10ft
ALDSX45AXXX	4x5 Downspout	Almond Aluminum .027	$47.80 / 10ft
IVDSX45AXXX	4x5 Downspout	Ivory Aluminum .027	$47.80 / 10ft
LNDSX45AXXX	4x5 Downspout	Linen Aluminum .027	$47.80 / 10ft
CRDSX45AXXX	4x5 Downspout	Cream Aluminum .027	$47.80 / 10ft
HBDSX45AXXX	4x5 Downspout	Herringbone Aluminum .027	$47.80 / 10ft
WIDSX45AXXX	4x5 Downspout	Wicker Aluminum .027	$47.80 / 10ft
GGDSX45AXXX	4x5 Downspout	Grecian Green Aluminum .027	$47.80 / 10ft
BBDSX45AXXX	4x5 Downspout	Buckskin Brown Aluminum .027	$47.80 / 10ft
BRDSX45AXXX	4x5 Downspout	Bronze Aluminum .027	$47.80 / 10ft
CLDSX45AXXX	4x5 Downspout	Clay Aluminum .027	$47.80 / 10ft
TGDSX45AXXX	4x5 Downspout	Tuxedo Gray Aluminum .027	$47.80 / 10ft
PGDSX45AXXX	4x5 Downspout	Pearl Gray Aluminum .027	$47.80 / 10ft
CBDSX45AXXX	4x5 Downspout	CB Gray Aluminum .027	$47.80 / 10ft
REDSX45AXXX	4x5 Downspout	Red Aluminum .027	$47.80 / 10ft
BVDSX45AXXX	4x5 Downspout	Beaver Brown Aluminum .027	$47.80 / 10ft
MBDSX45AXXX	4x5 Downspout	Musket Brown Aluminum .027	$47.80 / 10ft
BLDSX45AXXX	4x5 Downspout	Black Aluminum .027	$47.80 / 10ft
HGDSX45AXXX	4x5 Downspout	HG White Aluminum .027	$47.80 / 10ft