What jack stud means
A jack stud is the shorter stud inside the king stud at an opening. The header sits on top of it.
Also called trimmer stud, trimmer.
Where it matters on a carpentry job
Wide openings and heavy headers can need more than one jack on each side. Follow the header table or the engineer's note, and do not trim jacks short to fit a window.
Work it out
- Free calculator: Framing calculator
- Tools, templates and guides: Free carpentry resources