Genuine replacement filter for the air purifier Levoit Core 400S. 

Consists of the pre-filter, True HEPA H13 filter with HEPASmart Technology, and activated carbon filter. With 3 stages of purification, it filters 99.97% of pollutants, even those as small as 0.3 μm. It filters airborne bacteria, viruses, dust mites, mold spores, pollen, allergens (including those from pets), odors, smoke, PM2.5 and PM10 suspended particles, and VOCs (volatile organic compounds). 

Replacement of the New Technology HEPASmart Technology filter is recommended every 12 months or when the filter change indicator lights up. 3-in-1 Nylon Pre-Filter, True HEPA H13 Filter with HEPASmart Technology, High-Efficiency Activated Carbon Filter for Levoit Core 400S Air Purifier.