Winix air cleaners and dehumidifiers for your home your health your life.Winix U300 Medium Room Air CleanerWinix U450 Large Room Air CleanerWinix P150 FresHome HEPA Air CleanerWinix P300 FresHome HEPA Air CleanerWinix P450 FresHome HEPA Air CleanerWinix WAC9500 Plasmawave Air CleanerWinix 5500 True HEPA Air Cleaner with Plasmawave Technology (WAC5500)Winix WAC5300 Plasmawave Air Cleaner Winix One Year Replacement Filter Set Size 17Winix Washable Ultimate Filter Cartridge Size 21Winix Size 21 One-Year Replacement Filter SetWinix Washable Ultimate Filter Cartridge Size 25Winix One Year Replacement Filter Set Size 25 Heating, Cooling & Air Quality» click image to see larger view (Manufacturer # WAC5500 ) Long Life True HEPA Filtration Captures 99.97 of airborne pollutants and allergens as small as 0.3 microns Odor Control Carbon Pre-Filter especially formulated to capture offensive Smoke, Cooking and other Household Odors. carbon sheet works as a pre-filter to capture large particles like hair, carpet fibers and dust adding life to your filter.