A 90kg left-wound torsion spring is a heavy-duty hardware component designed to counterbalance sectional garage doors with a standard height of 2100mm to 2300mm. It features a red winding cone (left-wound) for correct installation on the left side of the center bracket.
Key Specifications
- Capacity: 90kg lifting weight
- Door Height: Standard 2.1m to 2.3m doors
- Winding/Cone: Left-wound, typically marked with a red cone or red stripe
- Material: High-tensile oil-tempered steel wire

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