Oceans Motions 4-way...

[mark]

Neat plumbing, what type of bulkhead is that in the top corners?

The 4-ways are a little big, but what takes the space is the unions. Guess though you could plumb it in hard, still leave it in place for cleaning etc. If actually had to take it out, cut the pipe leading into the thread unions.

Here's on a Dart for idea of size and sitting on 12x12" tiles.