The WINIX U300 Air Purifier offers superior air cleaning technology designed to capture Dust, Pollen, Pet Dander, Smoke, Mold Spores, Organic Chemicals, and Household Odors and is best used for living spaces, bedrooms or offices. The WINIX U300 uses a unique 5-Stage Air Cleaning System which features a Washable Pre-Filter, CleanCel® Technology, 99.97% True HEPA Filter, Advanced Odor Control Washable Carbon Filter, and WINIX PlasmaWave® Technology. TECHNICAL SPECS Room Capacity - 300 Sq. Ft Wattage - 4 W/ Turbo 60 W Fan Speed / Auto - 4 / Yes Sound Level per fan speed - 26 / 35 / 46 / 55 dB Air Flow - 1.1 / 2.5 / 4.0 / 5.5 m3/min Air Changes Per Hour - 8.1 CLEANING SYSTEM Filter - True HEPA 99.97% Carbon Filter - Washable Activated Pre Filter - Washable Plasma Wave - yes Antimicrobial additive - Clean cell FEATURES Air Quality Indicator - 5 levels Gas, Odor, Dust Sensors - Yes Change Filter Light - Yes INT'L CERTIFICATIONS CE; ROHS; Energy Star; AHAM:197/197/214 Unit Weight: 7 Kgs