[Perfect Compatibility] Our replacement LV-H128 filters are compatible with LEVOIT LV-H128, ROVACS RV60, and PUURVSAS HM669A air purifiers. This product is equivalent to part numbers LV-H128-RF, HM669A, and RV60. Please verify your air purifier model before ordering. Please note: This is not an OEM product. Brand names and model numbers are used only to indicate compatibility. [Great Value Package] This package includes 4 premium H13 grade true HEPA filters. It is a cost-effective solution for replacing the HEPA filters in your air purifier. For optimal performance, it is recommended to replace the filter every 3 to 6 months to maintain clean and healthy indoor air for your home. [360 Degree Purification] The 3-in-1 filter design includes a nylon pre-filter, an H13 grade true HEPA filter, and an activated carbon filter. This upgraded filter effectively captures up to 99.9% of airborne particles, including smoke, cooking odors, pet dander, dust, allergens, and other impurities. Enjoy a cleaner, fresher, and more comfortable indoor environment with high-efficiency filtration. [Enhanced Filter Design] The upgraded LV-H128 filter is constructed with high-quality non-woven fabric and activated carbon. Featuring an advanced low-resistance, low-density structure, it reduces wind resistance while maintaining high filtration efficiency and low energy consumption. This helps extend the lifespan of your air purifier. All materials are environmentally friendly and responsibly sourced, with excellent craftsmanship for reliable performance.