If you need a double garage door the typical measurement is 16 ft.
Sieting garage door.
Frame the rough opening to 3 inches wider than the garage door size you have selected.
There is no standard garage door size.
Garage door springs offset the weight of the door and allow it to open and close with ease.
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.
If the door is 7 tall frame the opening 7 1 5.