Air Touch V3 - Compound Pre-Filter + HEPA. Designed for the Air Touch V3 Air Purifier. Pre Filter captures large particles such as dust, lint, fibres, hair and pet fur at 1st stage and increases the life of the HEPA H13 Filter. HEPA H13 filter removes 99.99% of allergens and microscopic pollutants above 0.3 microns, including PM2.5 and pollen.