[H13 True HEPA Filtration Technology] Filters 99.97% dust, pollen, smoke, odours, mould spores, and pet dander. The air filters catch particles as small as 0.3 microns. [4-Stage Purification]- Preliminary Filter: Captures large particles such as dust, pet dander, and hair. H13 True HEPA Filter: High-grade H13 True HEPA Filter traps fine particles such as PM2.5, dust mites, allergens, airborne bacteria, pollen, mould, and other airborne contaminants as small as 0.3 m. High-Efficiency Activated Carbon Filter: Adsorbs various odours and smokes such as cigarette smoke, fumes, cooking smell, pet odours, hazardous gases, and VOCs. Polypropylene Net: Polypropylene Net is designed as extra protection of Activated Carbon Filter for its enhanced efficiency. **[Sealed Filter Pack & Replacement Period]**It is recommended to replace filters every 5 to 6 months. Filters are sealed to protect their life quality. Please remove the packaging plastic of new filters before placing them into the air purifier. The filter is easy to be replaced and disposed of without any tool required, you can replace the filter in a few seconds. [Sealed& Safe Properly ] The filter is sealed to protect its lifetime. It is recommended to replace air filters every 6 months. Remove the filter from plastic packaging before placing it into AroDry-P10/P16.