Garage Door Extension Spring Replacement Size

In most cases the stretch of the extension spring should be half of the door height.

Garage door extension spring replacement size.

This means for a 7 foot high door 84 inches the spring stretch would be 42 inches. Knowing the spring s length can help you find the wire size on the chart above. Measure the height of the garage door. Two p730 springs one on each side of the door can handle a 90 lbs.

For an 8 foot high door the spring would be 28 inches long with a 48 inch stretch. If your garage door is taller than 7 ft please call our helpdesk at 1 800 731 0261 for assistance. If you see a 1 75 on the cone the spring has a 13 4 inch diameter. This is the wire size.

Most extension springs for 7 foot high doors are 25 inches long with a 42 inch stretch. How to weight your garage door. Door with an initial tension of 110 lbs. The holmes hally p730 30 in.

Change the fraction into a decimal and divide by 10. Measure the diameter of 1 16 of an inch. Plug end extension spring is a spring replacement for 1 piece tilt up canopy style garage doors. For a more accurate measurement start at the 1 mark on your ruler.

Sometimes this number is written on the winding or stationary cone. Measure 10 coils to the nearest 1 16. Starting with our easy to use selection tool you can easily find the garage door extension springs you are looking for the 1st time.