[Full Compatibility] Compatible with LEVOIT Core 300, Core 300S, Core 300-P, Core 300S-P air purifiers, replace ORIGINAL WHITE filter, part # Core 300-RF and 300-RF-PA. Product dimension: 7.56 x 7.56 x 5.8 inch. 【Note】 This Core 300 replacement filter NOT fit Core MINI / Core200S / Core400S / Core600S. Please verify your model and filter size before placing an order. [Cost Effective] 2 True HEPA filters which fit and work as good as the name brand. [Powerful Filtration] Great for pet owners or people sensitive to the air. Say goodbye to the dust, dander, pollen, smoke and more. Our filters are capable of filtering the smoke produced by wildfires, rendering the indoor air pure and delightful. [Effortless Setup] Just take the original filter out, and fit the new one in. [Long Lasting] It is recommended to replace filters for every 6-8 months. All manufacturers' names and part numbers are used for compatibility information only.