TL;DR
A downspout is the vertical pipe that carries water from a gutter outlet down to grade, a splash block, or an underground drain. Residential sizes are 2x3 and 3x4 inches in rectangular profile, with the larger moving roughly double the water and resisting clogs better under heavy leaf load; the practical rule places one for every 30 to 40 feet of gutter run.
What it means
A downspout is the vertical pipe that carries water from a gutter outlet down to grade, a splash block, or an underground drain. Residential sizes are 2x3 and 3x4 inches in rectangular profile, with the larger moving roughly double the water and resisting clogs better under heavy leaf load; the practical rule places one for every 30 to 40 feet of gutter run. Where it dumps matters as much as how it drains, since discharge against the foundation is a leading, and cheaply fixed, cause of wet basements.
Where it sits in the glossary
Downspout is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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