TL;DR
A garage door strut is the horizontal U-shaped steel reinforcement bolted across the inside face of a door section to stiffen it against bowing — standard on wide double-car doors, on the top section where the opener arm pulls, and added after wind events rack a panel. Struts come in 2- to 3-inch depths cut to door width, and missing ones explain a door that flexes visibly as the opener starts.
What it means
A garage door strut is the horizontal U-shaped steel reinforcement bolted across the inside face of a door section to stiffen it against bowing — standard on wide double-car doors, on the top section where the opener arm pulls, and added after wind events rack a panel. Struts come in 2- to 3-inch depths cut to door width, and missing ones explain a door that flexes visibly as the opener starts. In coastal wind-load jurisdictions, strut count per section is part of the door's rated assembly.
Where it sits in the glossary
Garage door strut 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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