A 8 x 7 feet door will be the perfect option for any mid size sedans and most of suvs.
Rough opening for a 10 x 7 garage door.
If the door is 7 tall frame the opening 7 1 5.
Bigger trucks will fit in 9 x 8 doors with very few exceptions.
If you are installing a 9 wide door the opening will be 9 3 wide.
Step 1 measure the old door if you are replacing an existing door with one of the same size or the new door of choice if you are building a new garage.
When constructing a new garage the opening for a 16 7 garage door the opening should measure 16 7.
Frame the rough opening to 3 inches wider than the garage door size you have selected.
Frame the rough opening to a height that is 1 5 taller than the door that you have selected.
That for a 16 foot wide garage door the header should be at minimum 9 inches longer than the door.
It is important to note.
The rough opening is equal to the size of the door but you need to figure back head and side room before choosing and installing the new garage door.
Standard garage doors in our area are 8 9 16 and 18 wide.
After installing the jambs your garage door opening should now be the same size as the garage door.
Cut the header from 2 x 12 lumber and to a length of the rough opening plus 6 inches.
Install the header on top of the trimmers and nail.
The 16 7 opening should be after the header and all the trim work is installed.
The height of the rough opening would be the height of the garage door plus the thickness of whatever you are putting underneath the header in addition to the thickness of the mortar etc.
Width of garage door opening standard widths are 8 9 10 12 14 16 17 and 18 height of the garage door opening standard residential heights are 7 7 6 8 header the header is ideally a minimum 12 wide micro laminated beam that spans the width of the garage door opening.
Next you will need to know your door height.
Always consider the car dimensions while designing a door opening and choosing right size of the garage door.