Schluter-KERDI-SHOWER-LT/-LTS are prefabricated expanded polystyrene sloped trays with integrated KERDI waterproofing specifically designed to accept the KERDI-LINE linear drain. The trays are available for wall (-LS) or center (-L) drain placement and are available in 39" x 39" (100 x 100 cm), 55" x 55" (140 x 140 cm), 48" x 48" (122 cm x 122 cm), 36" x 72" (91 cm x 183 cm), 38" x 76" (97 cm x 193 cm) sizes. The KERDI-SHOWER-LT/-LTS are available with center (-LT) and perimeter (-LTS) drain placements in nine configurations with reduced perimeter heights to aide in the installation of curbless showers.