I need to fit a shower mixer where the pipes come down into the shower from the ceiling and are exposed (i.e. sitting on top of the tiles). Most shower mixers i've looked at seem to be required to sit flat against the wall, requiring that the pipes come in to the mixer inlets horizontally from behind the wall. Therefore i need a mixer where the inlets are on top of the mixer, not behind it. I'm sure these must be available, but i'm struggling on what to search for! Any ideas or links?