Core 300 Replacement Filter: Specially designed for Levoit Core 300 Air Purifier to maintain its peak performance. Save a lot on your year-round air purification needs at a cost-effective price. It is recommended to replace the filter every 6-8 months True HEPA Technology: Features a Class H13 True HEPA filter that meets High Efficiency Particulate Air (HEPA) standards. Captures Large Particles: The ultra-fine nylon pre-filter captures large particles such as dust, lint, fibers, hair and pet fur, also helping to maximize filter life Catch household odors: Advanced granular activated carbon filters physically absorb unwanted odors and fumes such as smoke, cooking odors and pet odors, as well as filter volatile organic compounds (VOCs), ideal for homes with pets, cooking and smoking