Schluter® SHELF QUADRILAT CORNER WAVEThere's a right way and a wrong way to add storage to a tile shower. The wrong way is a wire caddy that rusts and falls over. The right way is a Schluter SHELF built directly into your tile installation waterproof, flush, and permanent. This is the SHELF QUADRILAT CORNER WAVE: a flat front quadrilateral corner shelf with a rectangular surface area, with a gently undulating wave edge detail artsy without being loud. It installs using the same Schluter