Fundo OneStep is available in several standard sizes to fit predetermined shower stalls , featuring centered and off-centered drain location options. Fundo OneStep is available with select drain cover options. The OnesStep bases can be installed in combination with wedi Building Panel or with alternative tile backer boards, such as cement boards, if these are topically waterproofed in the field. Fundo OneStep can be directly tiled over upon installation and there is no limitation to the size of tile or type of tile and cement based tile setting materials selected. Due to the precise slope fields of the Fundo OneStep, large or small format tile may be used. Within each slope field the tile will be fully supported over an even yet sloped surface. Where slope fields meet, grout lines should be designed when using tile larger than 4" x 4" as these should not span across two slope fields.