OZONE FREE: Levoit air purifiers avoid using UV-C light, an air cleaning method that research has shown can produce harmful ozone and secondary pollution HIGH PERFORMANCE: Enjoy fresh air in minutes with the Core 300 True HEPA Air Purifier. Featuring VortexAir Technology and 360° air intake, the Core 300 cleans spaces up to 547 ft2 in 30 minutes, 219 ft2 in 12 minutes (CADR: 141 CFM / 240 m3/h). Only products over 6 pounds can be equipped with such powerful motors that optimize the air cleaning performance FIND RELIEF: Ease sneezing, congestion, and other allergy symptoms caused by airborne contaminants. The H13 True HEPA Filter works alongside the Pre-Filter and High-Efficiency Activated Carbon Filter to capture 99.97% of airborne particles 0.3 microns in size, such as dust, smoke, pollen, odor OFFICIAL LEVOIT FILTERS: Search for B07RSZSYNC or Core 300-RF to find Levoit's Core 300 replacement filter. Levoit filters provide the best fit and filtration, while off-brand filt