Could you elaborate please?
need more info to help you
Do you to know what materials to make a bath panel out of, how to install panels, who makes bath panels or what?
Exactly what do you mean by a "bath panel"?
Here's a video that might help - https://www.youtube.com/watch?v=fTJzLvSZt4k
Make a frame of timber where the bath is to take the finished Panel using screws, then screw on your Panel or Panels to fit your space.