Cut a 2 x 6 piece of lumber and nail to the face of wall exactly in the center of the garage header.
Post frame garage door header.
Most conventional garage doors are 7ft.
The procedure for constructing a header for 6 inch exterior wall framing can be modified for any wall thickness.
Get a door with the same size as the one you are replacing.
This piece of.
Install the header jambs and center pad of the frame using a 2 x 6 lumber for the header jambs and center pad.
Header requirement 2 at minimum the header should be 12 wide with doubled 2 4 at opening and ceiling running the width of the door with a 2 4 in the center of the opening for the center bracket to attach to.
Header the header is ideally a minimum 12 wide micro laminated beam that spans the width of the garage door opening.
With question number two.
Together the headers king studs and trimmers act as a system that transfers weight from above down and around the window and door openings to the floor and foundation below.
You would actually end up with 20 inches of light panel above the door of which most of it will be blocked off by the top overhead door jamb the overhead door header and the eave girt.
Last pull a measurement from the top of the 2 x 6 piece of lumber that you just installed to the ceiling of the garage.
Building a structural header for a garage door opening can be handled on the jobsite and will offer the same structural support as more expensive solid wood beams.
Pine is an excellent choice for a garage.
This would allow for a three foot space between each door and make for a much better target with a wide trailer.