TL;DR
Track radius is the curvature of the transition piece connecting a garage door's vertical track to its horizontal track, standardized at 12 or 15 inches, which dictates how much headroom the installation needs above the opening. A 15-inch radius gives smoother, quieter travel but demands more clearance, while low-headroom kits use special dual-track arrangements where neither standard curve fits.
What it means
Track radius is the curvature of the transition piece connecting a garage door's vertical track to its horizontal track, standardized at 12 or 15 inches, which dictates how much headroom the installation needs above the opening. A 15-inch radius gives smoother, quieter travel but demands more clearance, while low-headroom kits use special dual-track arrangements where neither standard curve fits. Matching replacement track to the existing geometry matters because mixing radii leaves rollers slamming through a misfit curve every cycle.
Where it sits in the glossary
Track radius 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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