The WINIX NK100 Air Purifier combines a modern design and a 4-stage cleaning system to bring you a beautiful air purifier with outstanding performance. The 4-stage system uses a 360 All-in-One Filter featuring a hair collecting Pre-filter, Coated DeOdorization (CD) Carbon Filter, 99.97% True HEPA Filter, and PlasmaWave Technology, all of which combine to offer superior control of Pet Dander and Odor, as well as capturing other Particles and Allergens. SmartSensors constantly monitor air quality and adjust the fan speed to give you Set-and-Forget convenience.