The AEROMAT 80, AEROMAT 100 and AEROMAT 150 window ventilators use the natural pressure differential between the outside and inside air for a demand-based fresh air supply with effective sound absorption. They thus provide a comfortable and healthy room atmosphere. The difference between the three versions is not only in the unit height, which can be deduced from the name, because different air supply and sound absorption performances as well as different installation locations are possible depending on the model and type. The colour of the ventilator casing can also be individually designed to adapt to the premises.