MAXIMUM COVERAGE: Cleans large spaces up to 1,793 sq ft in one hour, 896 sq ft in 30 minutes (CADR 406). Ideal for homes, apartments, bedrooms, living rooms, offices, schools, universities, classrooms, hospitals, restaurants, and other businesses. TRUE HEPA H13 FILTRATION: Medify Air s HEPA filter material tested to remove 99.9% of particles from O.3 to 0.1 m by Intertek Laboratories, including allergens, odors, VOCs, smoke, pollen, pet dander, dust, smog, contaminants, and more down to 0.1 microns in size. Captures finer particles than HEPA H11 (0.3 microns). ULTRA QUIET: Choose from 3 fan speeds, with the lowest setting operating virtually silent. Runs at 110 Volts at a min noise level of 46dB and max of 66dB.