CORE 300 REPLACEMENT FILTER: Exclusively designed for Core 300 air purifier to maintain . With cost-effective to save much cost for your all-year-round air cleaning need. It is recommended to replace filters 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, , and pollen, effectively helping allergiesTRAP PARTICLE: Ultra-fine Nylon -Filter captures 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 as filtering volatile 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.