Compatible with FY1413 and FY1410 Air Purifier Replacement Filter Set, designed for use with 1000 and 1000I models. True HEPA filter captures up to 99.97% of particles as small as 0.3 microns. HEPA and activated carbon filter set helps remove ultra-fine particles as small as 0.02 microns, including airborne pollutants and allergens. Activated carbon filter features a honeycomb structure to effectively reduce gases, odors, and volatile organic compounds from the air. Filters are properly sealed to maintain efficiency and extend lifespan. It is recommended to replace the filters every 6 months for optimal performance. To install, remove filters from packaging and place into the air purifier. Package includes: 2 x HEPA filters, 2 x activated carbon mesh filters. Note: Colors may vary slightly due to lighting and display settings. Measurement tolerance is +/- 1-3 cm.