You will need to add 1 2 of plywood between the 2x4 s to get the right wall thickness of 3 1 2.
Metal stud framing door header.
Cut the door header.
Step 1 measure and mark the door jambs from the floor to the desired height of the header.
How to frame a door in metal walls.
Boxed jamb studs welded together reduces material build up and finish problems.
Header tracks infill stud header members typical base anchorage use of cripple stud to receive head sill tracks at the jamb studs helps maintain alignment of finishes.
If you are using metal stud framing you can buy an easy to install one piece factory fabricated header or you can build your own.
This is the actual thickness of a 2x4.
You can insert 2x4s into headers and studs at door openings to provide a surface for attaching doorjambs.
Back to back header reduces web crippling reinforcement requirements.
Metal walls framed with steel studs are practical in basements and utility rooms where water heaters and washing machines are installed.