CORE 300 REPLACEMENT FILTER: Exclusively designed for Core 300 air purifier to maintain performance. With cost-effective to save much cost for your all-year-round air cleaning need. It is recommended to replace filters 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, , and pollen, effectively helping allergies TRAP PARTICLE: Ultra-fine Nylon -Filter captures particles such as dust, lint, fibers, hair, and pet fur, it also helps to maximize the filter's 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 as filtering volatile compounds (VOCs), perfect for households with pets, cooking and smokers Colour:As Shown Material:plastic Size:193 x 150mm Package Contents: 3 x filter screen Only 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.