My father, who lives a long way away and who is very independently minded, is having a small downstairs bedroom converted to take a built in spa hot tub. From what I can gather talking to him about this, the spa people will replace the two, double gang sockets with Maintenance Free junction boxes, attached in place of the backboxes. They will then bathroom wall-panel over all the walls. One junction will be behind a wall panel, which in turn, will be behind the spa that will sit against the panel. They have told him that they have an electrician who issues the appropriate paperwork once they have done the work. This all seems in order but I thought I would double check on here.