18 I IN-WASH IN-TANK® ® Rimless Vortex Revolutionary design focused on water A powerful flush A 360° tornado and a cascade guarantee a stronger and more effective water flow, thoroughly cleaning the entire surface of the bowl. Unique performance Water flows more times around the bowl of the In-Wash In-Tank,® ® providing a more efficient flush than a WC without Vortex technology.® Think outside the box Its asymmetrical inner surface creates a tornado effect, increasing the effectiveness of the flush.