1.Perfect Adaptation -- Core 200s replacement filters are compatible with LEVOIT Core 200S and Core 200S-P Smart WiFi Air Purifier. Compared to Part # Core 200S-RF. NOTE: Not for Vista 200. This is not a OEM product but it's made using the same process as the original. 2. You Need -- Adopting 3-in-1 H13 Grade Filtration System, i.e. Nylon Preliminary Filter, H13 Grade True HEPA Filter, Activated Carbon Filter, Core 200s replacement filter will surely stand out from the crowd of competing products. 3.Embrace Fresh Air -- If you've ever suffered from smoke from a fire or cooking odors, Core 200 replacement filter is a great way to help since 3-in-1 Filtration trap 99.97% pet dander, hair and absorb unpleasant smells.Choosing Core 200s filter replacement, now, you can enjoy nature's fresh air at home without going into the field! 4.Affordable 2 Pack Design -- 2 pack 7.09 x 7.09 x 5.2 inches Core 200S Replacement Filters design meet your need to replace the filter every six months. For levoit core 200s replacement filter, use upgraded non-woven fabric and activated carbon that maximizes filtration with low-density construction technology to help your machine run perfectly. 5.Friendly Reminder -- To help your air purifier run at its peak, we recommend that you change the Core 200s replacement filters every 3 months, but of course, the frequency of replacement depends entirely on your usage and the quality of the air.