[ Compare With ] For Core 400S Filter Replacement compatibles with for Core 400S 400S-RF purifier. Fit for your purifier.[ Why Choose Us ] Perfect size, high quality, low noise, technology and less cost. Our for Core 400S filter replacements will be a worthwhile investment.[ How Does The Filter Work ] The for Core 400S replacement filter contains H13 True HEPA Filter, Activated Carbon Filter and Nylon Pre-filter. It will capture 99.97% of particles as small as 0.3 micrometre and eliminate odor, VOCs and other smell in your home.[ How To Work Perfectly ] Replace for Core 400S filter replacement every 12 months, , according to your using frequency and the environment. Easy to change, no required.Colour: whiteMaterial: plasticPackage Contents:1 * Filter elementsOnly the above package content, other products are not included.Note: Light 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.