Providing the most powerful air purification possible.  Comprised of the (three) filter(s) needed to maintain H13 True HEPA filtration, while effectively removing 99.95% of particles as small as 0.1 microns including allergens, pollen, dust, pet dander and smoke. Each filter has an impressive lifespan of 1 year, making yearly filter changes a small but important part of keeping your space safe.. Filter for AeraMax™ SV. 2 per package.