Hepa - Filter (High Efficiency Particulate Airfilter) are filters with particle filter class. Filters of this class are used for filtering viruses, respirable dusts, mite eggs and -secretions, pollen, smoke particles, asbestos , bacteria, various toxic dusts and aerosols. Hepa filter allow filtering the sucked air before it is rejected by the cleaner. They hold up to ± 99.97% dust, particles and allergens Ø ≥ 3 microns. Metal protection.