GENUINE BLUEAIR DUSTMAGNET 5210i AND 5240i REPLACEMENT FILTER: Created by Blueair for the DustMagnet 5200 series air purifiers to guarantee optimal performance and maximum filtration efficiency; compatible with 5210i and 5240i SUPERIOR QUALITY HEPASILENT FILTER: The combination particle and carbon filter removes 99.97% of airborne particles, down to 0.1 microns in size with HEPASilent filtration; HEPASilent technology is unique to Blueair and not available in alternatives EFFECTIVE 2-STAGE FILTRATION: The particle filter traps airborne particles including pollen, dust, mould, pet dander, viruses, bacteria; Activated coconut carbon absorbs light gases, including VOCs, chemicals, and odours from pets, smoke, and cooking NATURALLY ANTIBACTERIAL: The naturally antibacterial polypropylene fibres in Blueair filters prevent bacteria and mould growth, so our filters never put bacteria and mould back into the air UP TO 12 MONTH FILTER LIFE: To maintain optimum performance, we recommend changing your filters every 6-12 months; Only use Blueair filters to keep your air purifier in the best working condition, other alternatives cannot be assured for quality, Weight: 0.29101018584 pounds, Manufacturer: Blueair