How To Measure Garage Door Extension Springs. Measure door the height.the standard height for most residential doors is either 6 ft. Measure the length of ten or twenty coils of the particular spring, which needs replacement (in inches), and compare this measurement to wire size measurement charts to establish the correct size of the wire.
Pinpoint exactly where the spring ends by placing one eye over the stationary center plate. That’s because garage door extension springs have a stripe of color on them that indicates their size. Innovative garage door openers, competitive prices.
Click here measure door the height.the standard height for most residential doors is either 6 ft.
The second method requires you to measure and weigh the garage door. 3.springs are only sold in pairs. Being off by even a fraction of an inch can lead to ordering the wrong spring size. The rough opening should be the same size as the door.