ed HEPASilent technology, the 2-stage filtration effectively eliminates 99.97 percent of particles, including allergens, viruses, and odors. The naturally antibacterial design prevents recontamination, offering clean air. Replace every 6 months for optimal results; the recyclable, energy-efficient construction ensures confidence in your air quality and your manufacturer’s warranty. Elevate your air purification with genuine Blueair filters.