Conventional concealed shower set ups require multiple holes in the wall. The Keuco IXMO shower mixers break new ground by combining several functional elements into a single body for that minimalist touch. Here's a quick intro to the World of IXMO! Typically, a concealed shower set up needs the following elements: flow control - for volume of water temperature control diverting of water flow between different outlets wall union - for connection of shower hose holder for the