Perfect Compatibility: Our HEPA filter replacement is designed to seamlessly fit air purifiers. The HEPA Filter R and Activated Carbon Pre Filter A are compatible with HPA300, HPA300VP, HPA304, HPA3300, HPA8350, HPA200, HPA201, HA202, HPA204, HPA250, HPA100, HPA101, HPA104, HPA105, HA106,HPA090, HPA094 series, thereby replacing # HRF-R3,HRF-R2,HRF-R1. Value Packaging: Our value pack includes 6 HEPA R Filters and 6 Activated Carbon Pre Filter A, sized appropriately for your convenience; HEPA Filter R (10.2 inch 6.5 inch 1.6 inch) and Activated Carbon Prefilter A (14.2 inch 17.3 inch 0.2 inch). These can also be tailored to the HPA200 and HPA100 series. Superior Filtration Systems: Our True HEPA filter efficiently removes airborne particles and odor, such as fine dust, pet dander, pollen, and smoke. For optimal performance, its recommended to replace the H13 HEPA filter every 6-12 months and the pre-filter every 2-3 months, depending on your usage and environmental conditions. Easy Installation: Replacing the filter is as easy as it gets. The product seamlessly fits into your air purifier without the need for any etra tools. For any questions about the installation process, you can always reach out and contact us. [HEPA FilterMade of high-strength environmental-friendly materials, which can block most of dust down to 0.3 micrometer. The filter can maintain the cleaning performance of the sweeper, while reducing the penetration of dust, and others into the air you breathe. Color: black+white Material: plastic + cotton Package Contents: 6 HEPA filter 6 activated carbon filter cotton Only the above package content, other products are not included.