Description Core P350 Filter Applicable Models: Core P350 replacement filter is compatible with LEVOIT Core P350 pet air purifier, part number Core P350-RF. Core P350 Pet Filter Excellent Performance: 3 in 1 h13 true HEPA filter and activated carbon filter and pre-filter, filtration efficiency is 99.97%. Core P350-RF Parts Included: Core P350 Pet Air Purifier Replacement Filters contains 2 packs of hepa filter replacements for LEVOIT. High-quality fabric: The Core P350 filter is made of high-quality non-woven fabric and activated carbon, which has low density and high efficiency, maximizing the filtering effect while maximizing the life of the air purifier filter. EASY REPLACEMENT: Simply take out your original air purifier replacement filter and put in your new filter, no tools required. (It is recommended to replace the filter every 6-8 months, depending on your usage). True HEPA Replacement Filters Compatible with Levoit Core 300 Core 300s Core P350 Air Purifier High Efficiency Carbon Filter Effectively to absorb and chemically decompose pet allergies, odors