[ Compare With ] For Core 400S Filter Replacement compatibles with for Core 400S 400S-RF air purifier. Fit for your air purifier. [ Why Choose Us ] Perfect size, high quality, low noise, same technology and less cost. Our for Core 400S filter replacements 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 capture 99.97% of particles as small as 0.3 micrometre and 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 tools required.<br><br>Colour: white Material: plastic<br><br>Package Contents: 1 * Filter elements<br><br>Only 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.