Torsion springs
Torsion springs are typically mounted on a shaft above the garage door opening. They twist as the door cycles and work with cable drums and lift cables.
Extension springs
Extension springs are commonly positioned along the sides of the horizontal tracks on systems that use them. They stretch and contract as the door moves.
Why the distinction matters
Spring type affects the hardware, installation method, and repair procedure. Both systems involve stored energy and should be approached cautiously.
Broken spring?
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