Due to the circular design, the whole filter surface is optimally utilized. The 360° filter filters pollutants such as dust, particulate matter (PM10, PM2.5 and minor), pollen and acarid allergens, pathogens such as bacteria and mould spores, cigarette smoke, exhaust fumes (also NO2), chemical vapours (Formaldehyde, Toluol, n-Butane, VOC,...) and odours from the idoor air. On an average, the 360° filter has to be changed after 12 months, depending on the intensity of the usage.