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