Core 300 replacement filter specially designed for levoit core 300 air purifier to maintain its highest performance.The cost-effective price saves a lot of costs for your annual air cleaning needs. It is recommended to replace the filter every 6-8 monthsH13 true HEPA filter conforming to HEPA standard shall be adopted. It can filter fine air particles, such as pet dander, dust mites and pollen, and effectively help improve allergiescapture large particles the ultra-fine pre filter captures large particles such as dust, lint, fiber, hair and pet fur, which also helps to prolong the service life of the filterColour GreenMaterial plasticPackage Contents 1 x air purifier filterOnly the above package content, other products are not included.Note Light shooting 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.