Tilt garage doors use extension springs which means they stretch when weight is applied. The springs have double loops on each end of the spring and have a colour code applied to one end. One end is typically attached to a fixed point and the loop on the other end is attached to the garage door. Our standard tilt garage door spring size ranges we keep in stock: Wire Size range: 4.0 – 6.30 mm Outside Diameter: 34.0 – 48.50 mm Overall Length: 405.0 – 650.0 mm Body Length: 323.0 – 558.0 mm
