5 screws on the outside. 3 on the little white corner brackets inside the shelves. Silicone down one side. I just cut it the peeled off later. The wires are for the lights that are above the mirror. Be warned they did not have plug
an sockets so I had to cut the wires and put plug
and sockets on when I put it back on. Not a big problem just awkward. We also took the chance to clean the backflow valve while it was accessible. Despite our best efforts there was still a fair amount of calcium in it. Easy to remove pull apart and clean. We always had a very small amount of back fill. After cleaning
the valve none.