Trusens Replacement Filter 3-IN-1 HEPA Drum For Large Z3000DescriptionSpecificationsShipping All in one filter system combines HEPA with activated carbon and a separate washable prefilter. This combination filter has been engineered to capture microscopic particles, allergens and volatile organic components (VOCs), and odorous gases. The filter is at the core of purifying your air. Filter replacement is essential for your purifier to perform at its best.** 360 degree filtration draws in air from all