Thedouble-layer 2-in-1 HEPA + activated carbon filter for the Sphere Air Purifier(DUAP01 / DUAP02) removes dust particles, odours and other harmful substances from the air such as fine dust (PM2.5, PM0.3, PM0.1), smog, pollen, cigarette smoke, viruses, bacteria, benzene and formaldehyde. The true HEPA filterremoves up to 99.97% of all airborne harmful dust particles up to 0.3 microns in size. Filter lifespan: 4500 hours (depending on usage and air quality).
