The track radius is extremely important in determining what type of springs you need for your door especially when you need to find garage door springs by weight.
Garage door track radius measure.
There are five basic garage door track options although the first two are by far the most common ones used in residential installations.
One quick rule of thumb in finding out what you have is to measure the height of the track stopping at the bottom.
The most popular standard radius track is a 15 radius which requires 15 of headroom to accommodate the curve of the track and all other track components equipment.
Look for general irregularities such as jambs which are not square.
For best results the inside of the garage door opening should be framed with 2 x 6 wood.
Step 1 measure the width of the opening at the widest point.
Nearly all residential garage doors have a track radius of either 12 or 15.
The amount of headroom in a garage is the determining factor between either a 12 inch or 15 inch radius.
Anything shorter than 91 inches is a 12 track radius.
Anything between 91 93 inches is a 15 track radius.