Schluter Kerdi-Shower-L 55 in. x 55 in. Polystyrene Center Drain Sloped Shower Tray Schluter KERDI Shower Tray - KERDI-SHOWER-L KSL 1400 55" x 55" (140 cm x 140 cm) End Height 1-13/32" (36 mm) Center Drain Placement Manufactured by Schluter Systems