Frame the rough opening to a height that is 1 5 taller than the door that you have selected.
Sieting garage door.
There is no standard garage door size.
Frame the rough opening to 3 inches wider than the garage door size you have selected.
If you are installing a 9 wide door the opening will be 9 3 wide.
A problem with the spring tension could cause the door to open or close unevenly improperly or at the wrong speed and adjusting the springs will likely solve the problem.
However a single garage door at eight to nine feet wide and seven to eight feet high is a common measurement for many homes.