Leave at least 5 of space on the sides of the door.
How to frame a 16 ft garage door.
If you are installing a 9 wide door the opening will be 9 3 wide.
Cut four 2 x 4 trimmers to this length and nail two each to either side of the rough opening.
How to frame a garage doors opening in this case 9ft wide by 8ft tall.
Frame the rough opening to 3 inches wider than the garage door size you have selected.
Make sure the jambs are plumb by using a six foot level.
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.
After they are plumb finish nailing the jamb board securely to the frame.
Leave a headroom of 14 or 12 minimum.
Measure the distance from the bottom plate of the wall to a point that is 1 1 2 inches higher that the garage door height.
Frame the rough opening for the garage door to 3 inches wider than the garage door you have selected.
I ll explain the process more extensively as we proceed.
If you are installing a 9 wide door the opening will be 9 3 wide.