Like magic, odors and kitchen vapors disappear. The unique downdraft ventilation system from the pioneer in ventilation technology. Lower the extraction level down to where pots and pans are, right where vapors develop. The head remains clear and senses acute. Lid and frame fit in unobtrusively between the stainless steel appliances. The flaps close all by themselves. The VL 430/431 downdraft ventilation system is highly efficient and forms a perfectly unified whole with built-in appliances in the 400 series. One or two elements can be controlled at the touch of a fingertip. The flaps open only when ventilation is needed. Stainless steel grease filters are easily cleaned in the dishwasher.