CAPTURE LARGE PARTICLE: Ultra-fine Pre-Filter captures large particles such as dust, lint, fibers, hair, and pet fur, also helpful to maximize the filter's lifeUPGRADED HEPA SMART TECHNOLOGY: Our H13 True HEPA Filter is safer than medical surgical mask materials and can achieve a better purification effect than traditional general HEPA. It captures of dust and allergens as small as 0.3 microns such as household dust, pet dander, mold spores and plant pollenELIMINATE HOUSEHOLD ODOR: Activated carbon filter abosrbs the unpleasant pet odors in the air and eliminates household odors without worrying about second-hand pollutionWARM MAINTENANCE TIP: You may need to replace your filter earlier or later depending on how often you use your air purifier. Using your air purifier in an environment with relatively high pollution may mean you will need to replace the filter more oftenColor: WhiteMaterial: composite materialPackage Contents:1 x Air Purifier FilterOnly 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.