Torsion see above which mounts on the header above the door and extension photo 1 which floats above the upper roller track.
How to instal a garage door spring.
The doors with two springs are easy to replace.
Disconnect the garage door opener so the door remains closed.
You may need to use a 2x4 or some other object to pry the garage door open.
Unplug the garage door opener and clamp the door to the track.
In the past extension springs were safer to install but didn t have containment cables running through the center of the spring.
A couple of carabiners can.
Garage door springs come in two styles.
Weigh your garage door.
On older openers you may need to remove the l shaped drawbar arm.
Disengage the opener from the door.
There are two types of garage door springs.
This can still be done when only one extension spring is broken.