Give your home beautifully clean air with the Healthmate Filter by Austin Air Systems. This 5 year pro-rated replacement filter offers you a 360° degree progressive 4 stage filtering system. A large particle pre-filter catches visible airborne debris like hair and pet dander, while a medium particle pre-filter removes smaller particles like molds, spores and pollen. 15 lbs of solid activated carbon and zeolite absorb chemicals, gases and odors; and finally a true medical grade HEPA traps 99.97% of particles as small as 0.3 µm including bacteria and viruses. This filter is available in 2 finishes: a Black filter that matches the Black, Silver and Midnight Blue Healthmate purifiers by Austin Air Systems; and a White filter that matches the White and Sandstone Healthmate purifiers.