KERDI-SHOWER-ST - 48" x 48" - Shower Tray - Center Drain Placement - 1-1/2" Perimiter Height Schluter KERDI Shower Tray ST-122 48" x 48" (122 cm x 122 cm) 1-1/4" (3.2 cm) Perimeter Height Center Drain Outlet Placement Manufactured by Schluter Systems