Garage Door Extension Spring Replacement Size

Measure 10 coils to the nearest 1 16.

Garage door extension spring replacement size. Measure the height of the garage door. For a more accurate measurement start at the 1 mark on your ruler. If you see a 1 75 on the cone the spring has a 13 4 inch diameter. Most extension springs for 7 foot high doors are 25 inches long with a 42 inch stretch.

Door with an initial tension of 110 lbs. For an 8 foot high door the spring would be 28 inches long with a 48 inch stretch. How to weight your garage door. Two p730 springs one on each side of the door can handle a 90 lbs.

Knowing the spring s length can help you find the wire size on the chart above. Sometimes this number is written on the winding or stationary cone. Measure the diameter of 1 16 of an inch. Starting with our easy to use selection tool you can easily find the garage door extension springs you are looking for the 1st time.

Plug end extension spring the holmes hally p730 30 in. Change the fraction into a decimal and divide by 10. Left wind springs are located on the right hand side of the door and right wind springs are located on the left side. This means for a 7 foot high door 84 inches the spring stretch would be 42 inches.

Plug end extension spring is a spring replacement for 1 piece tilt up canopy style garage doors. In most cases the stretch of the extension spring should be half of the door height. The holmes hally p730 30 in.