[ Compare With The One ] Core 400S Filter Replacement compatibles with Levoit Core 400S 400S-RF air purifier. Fit your air purifier. [ Why Choose Us ] Perfect size, high quality, low noise, same technology and less cost. Our Core 400S filter replacements will be a worthwhile investment. [ How Does The Filter Work ] The 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 Core 400S filter replacement every 12 months, more or less, according to your using frequency and the environment. Easy to change, no tools required. Colour: white Material: plastic Package Contents: 1 * Filter elements Only 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.