Should a garage door have one or two springs? Garage doors with extension assemblies require two springs, while torsion assemblies can operate with a single spring. However, relying on a single spring pose some disadvantages. Explore the benefits of a multi-spring setup and learn about common spring conversions and upgrades for residential garage doors.
https://garagedoorchamp.com/should-your-garage-door-have-one-or-two-springs/
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