Additional Information  3 Stage Filtration - Pre-filter, H13 HEPA Filter and active carbon fi lter work together to trap and neutralize airborne contaminants, allergens, germs, and odors True HEPA Filter - Medical Grade H13 HEPA filter removes up to 99.97% of airborne pollutants & particles as small as 0.3 microns Cleans Medium Size Rooms - Captures Dust, Pollen, Smoke, Pet Dander, and Bacteria Odor Absorbing - Active Carbon filter captures odors from smoke, pets and cooking Automatic Particle Sensor - Monitors and adjusts fan speed based on indoor air quality 3 Fan Speeds - Choose from 3 fan speeds or select auto mode control (based on particle sensor) Sleep Mode - Reduces fan speed and dims display to allow you to sleep undisturbed Filter Change Reminder = Replacement indicator lights up when it is time to replace your filter Perfect for Mid-Sized Rooms - Designed for rooms up to 260 square feet to circulate and filter air throughout the whole room AC Adapter - 100V - 240V universal voltage