1. Pre-Filter Removes dust, human hair, pet fur. | 2. Medium Filter Removes dust, germs and mildews. | 3. Anti-Microbial Filter Deactivates bacteria and viruses by up to 99%. | 4. Deodorisation Filter Removes bad odours and harmful gases. | 5. HEPA Filter Eliminates cigarette smoke, micro dust, bacteria, viruses and germs. |