[Perfect Compatibility] Our replacement LV-H128 filters are compatible with LEVOIT LV-H128, ROVACS RV60, and PUURVSAS HM669A air purifiers. This product is comparable to part numbers LV-H128-RF, HM669A, and RV60. Please verify your air purifier model before ordering. 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 help maintain clean 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 helps capture up to 99.9% of airborne particles such as smoke, odors from cooking and pets, dust, impurities, and other harmful particles. Enjoy a cleaner and more 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 a low-resistance, low-density structure that reduces wind resistance, improves filtration efficiency, and supports lower energy consumption. This design helps extend the lifespan of your air purifier. All materials used are environmentally friendly and made with excellent craftsmanship.