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 than medical materials and can achieve a better purification effect than traditional general HEPA. It captures of dust and as small as 0.3 microns such as household dust, pet dander, mold spores and plant pollen 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 need to replace the filter more often Color: WhiteMaterial: composite material Package Contents:1 x Air Purifier Filter 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.