Tilt garage doors use extension springs which means they stretch when weight is applied and they have loops on each end of the spring. One end is typically attached to a fixed point and the loop on the other end is attached to the door.
Standard tilt garage door spring size ranges we keep in stock:
Wire Size range: 4mm – 6.3mm
Outside Diameter: 34mm – 48.5mm
Overall Length: 405mm – 650mm
Body Length: 323mm – 558mm