CORE 300 REPLACEMENT FILTER: Exclusively designed for Levoit 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 monthsTRUE 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 allergiesTRAP 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 filter's lifeTRAP 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), perfect for households with pets, cooking and smokersColour:As ShownMaterial:plasticSize:193 x 150mmPackage Contents:3 x filter screenOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.