TL;DR
A rough opening is the framed hole in a wall built to receive a window or door, sized larger than the unit itself—typically half an inch to an inch in each direction—so the unit can be shimmed plumb, level, and square regardless of small framing errors. Manufacturers publish the required dimensions for every product, and framers build to them with king studs, jacks, and a header sized for the load above.
What it means
A rough opening is the framed hole in a wall built to receive a window or door, sized larger than the unit itself—typically half an inch to an inch in each direction—so the unit can be shimmed plumb, level, and square regardless of small framing errors. Manufacturers publish the required dimensions for every product, and framers build to them with king studs, jacks, and a header sized for the load above. An opening framed too tight cannot be shimmed straight; too loose, and fastening and sealing suffer.
Where it sits in the glossary
Rough opening 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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