Core 300 Air Purifier Replacement Filter, 3-in-1 True HEPA, High-Efficiency Activated Carbon, Core300-RF, 1 Pack, White LEVOIT CORE 300 REPLACEMENT FILTER: Exclusively designed for Core 300 air purifier to maintain its peak performance. With cost-effective price to save much cost for your all-year-round air cleaning need. It is recommended to replace filters every 6-8 months TRUE HEPA TECHNOLOGY: Adopt True HEPA Filter with H13 grade which meets the High-Efficiency Particulate Air (HEPA) standard. It filters the fine airborne particles such as pet dander, dust mites, and pollen, effectively helping improve allergies TRAP LARGE PARTICLE: Ultra-fine Nylon Pre-Filter captures large particles such as dust, lint, fibers, hair, and pet fur, it also helps to maximize the filters life TRAP HOUSEHOLD ODORS: High-grade granular activated carbon filter physically absorbs unwanted odors and fume, such as smoke, cooking smells, and pet odors, as well as filtering volatile organic compounds (VOCs), ideal for households with pets, cooking and smokers. pack*1pc.