American Standard 6030Y1.BWT Acrylux Tile Bath Wall Set, 60 by 30-Inch, Bone Walls mount directly to studs and feature full with accessory shelves Caulk-less installation with integral rubber gaskets in corner seams Pin-and slot design for easy alignment of side and back panels Liners on bath and walls for protection during installation Walls feature decorative grout lines for the look of tile