What Size Extension Spring Do I Need For My Garage Door

2 means the inside diameter is two inches etc.

What size extension spring do i need for my garage door.

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. This is the wire size. 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. 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.

Measure 10 coils to the nearest 1 16. When using two scales add the weights together for the total door weight. Knowing the spring s length can help you find the wire size on the chart above. For an 8 foot high door the spring would be 28 inches long with a 48 inch stretch.

Most extension springs for 7 foot high doors are 25 inches long with a 42 inch stretch. 1 75 means the inside diameter is 1 inches. Door must be in the fully open position to remove the tension. However great care must be taken when weighing the door.

Change the fraction into a decimal and divide by 10. 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. We would be glad to help. 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.

For a 7 foot tall garage door you should put 29 quarter turns on each spring.