Compare With : For Core 400S Filter Replacement compatibles with for Core 400S 400S-RF air purifier. Fit for your air purifier. CAPTURE LARGE PARTICLE: Ultra-fine Nylon Pre-Filter captures large particles such as dust, lint, fibers, hair, and pet fur, also helpful to maximize the filter's life UPGRADED HEPA SMART TECHNOLOGY: Our H13 True HEPA Filter is than medical mask materials and can achieve a better purification effect than traditional general HEPA. It captures 99.97% of dust and as small as 0.3 microns such as household dust, pet dander, mold spores and plant pollen ELIMINATE HOUSEHOLD ODOR: The AirReComposition Formula in the activated carbon filter, which improves deodorant ability by 60%, chemically decomposes the unpleasant pet odors in the air and eliminates household odors without worrying about second-hand pollution Easy to replace and disposable, no tools required. replace filters every 6 months for optimal performance.Using your air purifier in an environment with relatively high pollution may mean you will need to replace the filter more often Color: White Material: composite material Package Contents: 1 x Air Purifier Filters 1 x Cleaning Brush 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.