8 doors require a 27 spring that stretches up to 48 75 total length when to door is closed extension springs are a non returnable item call customer service if you have any questions.
Extension spring garage door diagram.
A more accurate method for weighing either a torsion spring door or an extension spring door is on our youtube channel.
This will tell them what they need to know.
Please feel free to give us a quick call if you run into problems choosing the right garage door extension springs.
Home garage door springs extension garage door springs extension garage door springs.
American garage door supply strives to make your purchasing process simple and worry free.
We make purchasing extension springs easy.
Next it attaches to the hook at the bracket that is attached to the overhead track.
The new box for the springs should have a generic diagram.
Since extension springs are determined by how much weight they each lift and the pulley system cuts this in half you need to replace your old springs with 200 pound extension springs.
That s because garage door extension springs have a stripe of color on them that indicates their size.
Our springs are american made highest quality garage door springs with lifetime warranty.
Plug end extension spring is a spring replacement for 1 piece tilt up canopy style garage doors.
We would be glad to help.
The cable now goes around the pulley at the end of the spring through the clevis.
Try our spring finder tool.
Do not try to remove the extension spring that is not broken when the garage door is closed.
If it breaks we replace it.
For extension spring systems they need safety cables so follow our video on how to replace your garage door extension spring safety cables.
Replacing garage door springs.
Starting with our easy to use selection tool you can easily find the garage door extension springs you are looking for the 1st time.
This door would use two 210 pound lift extension springs.
Commercial cable replacement the following pdfs are instructions for replacing commercial garage door cables in different situations a repair person may encounter in the field.
Or if the door has four extension springs the door would use two 100 pound lift springs and two 110 pound lift springs.
Two p728 springs one on each side of the door can handle a 90 lbs.
Pictures of your installation would be better.
Door with an initial tension of 110 lbs.