Core P350 Filter Applicable Models: The Core P350 replacement filter is compatible with the LEVOIT Core P350 pet air purifier, item number Core P350-RF. Excellent Performance: 3-in-1 H13 True HEPA filter, activated carbon filter, and pre-filter; 99.97% filtration efficiency. Package Includes: Includes a 2-pack of HEPA filter replacements for LEVOIT. High-Quality Fabric: Made from high-quality non-woven fabric and activated carbon; low density and high efficiency maximize filtration while extending filter life. Easy Replacement: Simply remove your old filter and insert the new one – no tools required. (It is recommended to replace the filter every 6-8 months, depending on usage.) True HEPA Replacement Filter Compatible with Levoit Core 300 & Core 300s & Core P350 Air Purifiers High-Efficiency Carbon Filter Effectively absorbs and chemically decomposes pet allergens and odors