What Size Extension Spring Do I Need For My Garage Door

Whatever the case garage door springs are an essential component of the garage door system and are independent of the automatic garage door unique opener.

What size extension spring do i need for my garage door. Knowing the spring s length can help you find the wire size on the chart above. Door must be in the fully open position to remove the tension. Once you know the total weight of your garage door using a bathroom scale for doors under 300 pounds you can use the chart below to see the color extension spring you need. When you are preparing to buy a garage door spring you need to also take into consideration the overall cost of buying or replacing your springs.

Torsion spring inside diameter and overall length in many cases the inside diameter of the torsion spring will be indicated on the stationary cone in between the two springs at the midpoint of the door. For a more accurate measurement start at the 1 mark on your ruler. 2 means the inside diameter is two inches etc. However great care must be taken when weighing the door.

We would be glad to help. Change the fraction into a decimal and divide by 10. For a 7 foot tall garage door you should put 29 quarter turns on each spring. Measure 10 coils to the nearest 1 16.

This is the wire size. For an 8 foot high door the spring would be 28 inches long with a 48 inch stretch. Please feel free to give us a quick call if you run into problems choosing the right garage door extension springs. Most extension springs for 7 foot high doors are 25 inches long with a 42 inch stretch.

Total door weight indicates the springs you will need for example if the door weighs 100 pounds you need two 100 pound springs one on each side.