In most cases the stretch of the extension spring should be half of the door height.
How to look up garage door extension spring size.
This video will show you how to identify the correct replacement extension spring for your garage door based on color coding size or weigh.
Door with an initial tension of 110 lbs.
Two p728 springs one on each side of the door can handle a 90 lbs.
For a complete list of garage door extension springs for 7 8 9 10 11 12 13 and 14 tall doors click here determine the door weight and door height.
Garage door springs offset the weight of the door and allow it to open and close with ease.
Springs in general last about 10 14 years or 15 20 thousand.
A problem with the spring tension could cause the door to open or close unevenly improperly or at the wrong speed and adjusting the springs will likely solve the problem.
Plug end extension spring is a p728 28 in.
Extension springs do as their name suggests.
Plug end extension spring is a spring replacement for 1 piece tilt up canopy style garage doors.
If the springs are located above the tracks and run away from the door toward the opener you have extension springs.
This means for a 7 foot high door 84 inches the spring stretch would be 42 inches.
Starting with our easy to use selection tool you can easily find the garage door extension springs you are looking for the 1st time.
Over time doors pick up weight.
Torsion springs turn as you open and close your garage door.
The pull weight of an extension spring is determined by the color code found on the end of the spring.
3 springs are only sold in pairs.
Measure door the height.
Look up at the springs from inside the.
Extension springs and torsion springs are the two kinds of garage door springs you ll find in garage doors.
They extend as your door moves and helps to balance your garage door.
Torsion spring wind direction before you can order the right torsion spring you need to know which way it is wound.
Most extension springs for 7 foot high doors are 25 inches long with a 42 inch stretch.
For an 8 foot high door the spring would be 28 inches long with a 48 inch stretch.