1.COMPATIBLE MODELS - This Core 300 Replacement Filter Compatible with LEVOIT Core 300 / Core 300-P / Core 300S /Core 300S-P VortexAir Air Purifier, Compare to part # # Core 300-RF. The Core 300 Replacement Filter dimension: 7.6"x7.6"x5.8" 2.3-STAGE FILTRATION SYSTEM - Activated Carbon Filter absorbs cooking smells,smoke and pet odors. H13 True HEPA Filter absorbs pet dander, dust, smoke, pollen and particles. Pre-Filter obstructs large particles such as hair, lint, fibers and pet fur 3.H13 TRUE HEPA FILTER - Our Core 300-RF Replacement Filters feature manufacturer-verified advanced low energy consumption and low-density structure technology for higher efficiency and less pressure, ensuring maximum performance. 4.HIGHLY EFFICIENT FILTRATION - This 3-in-1 H13 Grade True HEPA Replacement Filter Replacement for LEVOIT Core 300/Core 300S air purifier which can efficiently clean 99.7% of odors and fumes, such as smoke, cooking smells, pet odors and VOCs.