The Levoit Core 400S air purifier will purify the air in large family rooms, kitchens, and master bedrooms five times per hour. Its three-stage filtration offers protection from a wide range of airborne pollutants, using statically charged fibers to trap viruses and bacteria. It can capture at least 99.97% of 0.3-micron airborne particles. The 360-degree aerodynamic design with curved vents maximizes indoor air circulation, pulling in air from all directions. Meanwhile, the kinetic-energy absorption pads keep noise levels down as low as 24dB for a good night’s rest or when company is over.