Torsion springs for almost all door sizes.
To calculate the correct torsion spring for your garage:
-door size (width x height)
-door weight (possibly type of gate, steel gate, wooden gate, for example)
- placement of torsion springs (at the front above the door or at the back at the end of the roof rails)
- are there one or two springs (possibly right or left seen from the inside)
- state the diameter of the drum
- also state if you have a roof lift or degrees on the roof rails.
