High by 8 or 9 ft.
How to install a 9 by 7 garage door.
A door of 9 x 7 2743 x 2134 mm needs an opening of 9 2 743 mm wide by 7 2 134 mm high.
The position of the header and back jambs are very important.
For the headroom you should have about 10 to 12 of space depending on the spring system you re installing.
Garage doors come in standard sizes with most basic roll up single garage doors measuring about 7 feet 2 1 m tall and 9 feet 2 7 m wide.
High by 16 ft.
Standard single doors are 7 ft.
Make sure that the size of the opening matches the size of the door.
Door opening height and width headroom from top of opening to ceiling and back room length of garage.
Measure the various areas where the door will be installed.
The header must be flush on the same plane with back jambs.