The all-in-one filtration system combines an H13 HEPA filter with activated carbon and a separate washable pre-filter. * Product features: * The Leitz TruSens combined filter is designed to capture ultrafine airborne particles, including bacteria, viruses, dust, allergens, pet dander, volatile organic compounds (VOCs), and odor-causing gases. * The 360-degree H13 HEPA filtration draws air from all directions, collecting pollutants from the room that can affect allergies and other symptoms. * The washable pre-filter offers initial protection against larger particles such as dust and pet hair. Hand wash it with mild soap if necessary. * The carbon filter captures odors and certain gases. Replace it every 3 months. * The H13 HEPA filter captures at least 99.95% of ultrafine particles between 0.1 and 0.2 microns (MPPS). * Based on a test report issued by TÜV SÜD, the entire filter meets the H13 HEPA requirements according to EN 1822-1:2019 & EN ISO 29463-5:2018. * The air purifier's indicator light shows when the filters need to be replaced. * Compatible with the Leitz TruSens Z-2000 medium air purifier.