Most extension springs for 7 foot high doors are 25 inches long with a 42 inch stretch.
Garage door extension spring stretcher.
The pull weight of an extension spring is determined by the color code found on the end of the spring.
White 120 lb.
Yellow 140 lb.
Blue see more product details.
It has a 25 inch relaxed or compressed length and a 42 inch stretched length which is how far the spring should be stretched when the garage door is closed.
For an 8 foot high door the spring would be 28 inches long with a 48 inch stretch.
If you cannot determine the color code it will be necessary to weigh the door.
Fasten c clamps or vice grips under bottom rollers to retain door.
Save some money by replacing garage side extension spring on an old one piece garage door by yourself.
Tan 110 lb.
Yellow disconnect the springs and opener and use a scale to weigh the door if unsure of the weight of the door.
These springs are typically made of steel and mounted above the horizontal track of the garage door.
As you might expect longer springs tend to be used on taller garage doors.
Light blue 100 lb.
Springs that work for a standard height door won t work for an extra tall door because the springs will need to extend farther.
There are several types of garage door springs to consider when replacing them.
Garage door extension springs stretch to provide lifting power for the door.
Starting with our easy to use selection tool you can easily find the garage door extension springs you are looking for the 1st time.
Garage door extension springs for 7 high doors extension springs stretch springs for 7 high garage doors 80 lb.
Garage springs are under an extreme amount of tension and either stretch or torque providing enough force to help you move the door.
Tan 110 lb.
Extension springs stretch springs for 7 high garage doors 80 lb.
Gold 90 lb.
Measurements you ll want to note include.
3 springs are only sold in pairs.
To weigh your door.
Gold 90 lb.
A c hook is required for a single spring installation while a w hook is required for a double spring installation available separately.
White 120 lb.
We recommend replacing all springs at the same time for balanced door lift and even wear.
Height of the door extension springs vary in length.
Green 130 lb.
The c128 28 in.
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.
Take the measurements to a garage door professional and they ll help you find the right spring.
Measure door the height.
Light blue 100 lb.
Green 130 lb.
We recommend that you replace both springs that is why we only sell in pairs.
This extension spring is used on a seven foot garage door.