Marble & Travertine Shower Corner Shelves

EZ-Mount / Corner X Shelf
Installation of Corner Shelf w/ Epoxy-Gel Kit 
Video Tutorial
Some shelves doesn't include the EZ-Mount installation kit. Because you may not need it in the case of shelves will get build into the tiles during tiling/renovation. But if your wall is already tiled and you need to add shelves; you can either buy the shelves that include install kit or you can buy the shelf and install-kit separately.