I took some photos when I was in their studio the other year. It is somewhat typical for “theatrical set” construction - much rougher up close than what you’d expect.
The first photo is of the brick wall. It is just printed panels - you can see where they pieced the panels together to the right of the sign and then just painted the joint. The other picture is down the left side of the room as you face the brick wall. It is meant to look like a steel framed building, but the “steel” is just painted plywood.
It’s a nice effect for their videos, but not something I’d consider for my own shop where I’d actually see the details up close.