Everyone has their little issues.
How does window and door header heights work.
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.
So your jack stud should be cut at 81 for a 6 8 tall door.
Set the window head heights to match the top of the door frame to align the interior trim.
To align a door with an adjacent window it is important to measure the entire height of the door within the frame as the frame height will be higher than the slab size.
If you re a novice framer then this is the height of the bottom of the window and door headers.
Your header size is determined by the load it carries.
Mine has to do with disparate casing heights around windows and doors in the same rooms.
Which means the jack studs are 81 inches long typically.
Make sure the window head heights are set to match the top of the door frame so the interior trim can align.
The next jack stud will be cut to the height of your door plus 2 1 2 and minus the thickness of the bottom plate 1 1 2 as it will rest on top of this.
You know when the trim on the top of a window doesn t perfectly line up with the door it s near this is how to solve that annoyance.
82 1 2 inches also happens to be the standard header height for windows and doors.
This is also the top of the jack studs.