I am installing broadband in the house and also placing outlets. I have an interior wall where I will put two rosettes on both sides of the wall. I have removed the door and plan to push in a pipe above the door (for the ethernet cable). The problem is that around the door there is U-shaped sheet metal (metal stud?). Is it possible to loosen the upper of these metal studs(?) so that one can access above? There are recurring "holes" in the metal stud, so I think it should be possible to run a pipe above. I have attached photos of what it looks like. What is likely holding the stud(?) above the door? The few drywall/metal screws that are there, or is it some form of fastening surfaces between the metal studs(?)
should only be screwed. can be glued