The shower tray can be customized. The slope towards the drain is over a length of 81 cm for the Zerolux_XL80 and 91 cm for the Zereolux_XL90. The remaining part of the tray has a flat surface.
Zerolux_XL80: P80 L81/160, Zerolux_XL90: P90 L91/160.
Zerolux_XL180: P80 L161/250, Zerolux_XL190: P90 L161/250.