We could not fit a nice shower down our stairs so we are going custom, 40wideX54long in a corner, the guy said we should build a pony wall 36 high by 2X6's.( can we use 2x4's I think that will look a little boxy, we want an open look. We need a pivot door because at the end of the shower we have 4" to the infrared sauna. Please suggest a way to at least lower the pony to 18" ( we are using 18 "tile size) and include photos if you can, also we need custom glass (10 mm) thick? Do you run the glass to the ceiling which is 83" high? I have the drain dead center and I am pouring the concrete Monday so asap would help