Rework Your Air Purifier: Fits LEVOIT Core 300, Core 300S, Core 300-P, and Core 300S-P air purifiers. Replace the original filters, model Core 300-RF and 300-RF-PA to keep your air fresh. Note: NOT fit Core MINI / Core 200S / Core 400S / Core 600S. | Common Airborne Substance Removal: This all-purpose filter tackles various substances, like dust, pollen and pet daner, perfect for daily air purification in home. Breathe easier and sleep better by minimizing allergens that cause sneezing, itching, and coughing. | High-Efficiency HEPA Filter: Made from dense PET material with microstructures, this filter traps 30% more dust than standard PP filters for longer-lasting air purification. It traps 99.97% of particles as small as 0.3 microns, including dust, pollen, smoke, and pet dander. | Upgraded Carbon Filter: Designed with finer, smaller particles with more porous surface area, this filter boosts adsorption power by 10% compared to larger carbon particles. It effectively traps smoke, cooking odors, and pet smells, leaving your home fresh and clean. | Affordable Value: Packaged in a 2-pack for added savings, lasts about a year, making clean air budget-friendly. Create a safe, healthy home while minimizing maintenance costs, giving you peace of mind. | [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.