Selling in this listing, 1 Pack,  2 PACK or 3 Pack    Brand New  Compatible with Models: LEVOIT Core 200S Smart WiFi Air Purifier. Compare to Part: Core 200S-RF. Package Details: 3-IN-1 True HEPA Filter × 2. Per Filter including Pre-Mesh Filter, H13 Grade True HEPA Filter and High-Efficiency Activated Carbon Filter. Measurement 7.09 x 7.09 x 5.24" It is recommended to replace filters for every 6-8 months. The more you buy the more you save.   Free shipping within the USA only.  Any questions please ask prior to purchasing.