[Perfect Compatibility] Our replacement LV-H128 filters are compatible with LEVOIT LV-H128, ROVACS RV60, and PUURVSAS HM669A air purifiers. Compared to part numbers LV-H128-RF, HM669A, and RV60, please confirm your model before ordering. Please note: This is not an OEM product. Any reference to brand names or model numbers is intended solely to indicate compatibility. [Great Value Package] This package includes 4 premium H13 grade true HEPA filters. It is a cost-effective option 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 indoor air for your family and pets. [360 Degree Purification] 3-in-1 design featuring a nylon pre-filter, H13 grade true HEPA filter, and activated carbon filter. The upgraded LV-H128 HEPA filters effectively capture up to 99.9% of airborne particles, including smoke, odors from cooking and pets, dust, impurities, and other harmful airborne particles. Enjoy a clean and comfortable indoor environment with these high-efficiency, durable filters. [Enhanced Filter Design] The upgraded LV-H128 filter is constructed with high-quality non-woven fabric and activated carbon. It features an advanced low-resistance, low-density structure that reduces wind resistance, improves filtration efficiency, and lowers energy consumption. This design helps extend the lifespan of your air purifier. All materials used are environmentally friendly and free from harmful emissions, ensuring safe and reliable performance with excellent craftsmanship.