Unlike some compact purifiers, MA-15 doesn't skimp on effectiveness. The 3-layer HEPA H13 filter makes it one of the most powerful purifiers available. Perfect for homes, offices, medical facilities, and schools to efficiently clean 330 sq ft every 30 minutes. The touch operation panel features 3-fan speeds, a 0-8 hr timer, sleep mode, child lock, and filter indicator. Activated carbon removes odors while the HEPA filter quietly cleans, so you have peace of mind knowing your indoor air is safe. Features: MAXIMUM COVERAGE: Cleans up to 660 sq ft in one hr, 330 sq ft in 30 min, 165 sq ft in 15 min. [*Based on average CADR for pollen, smoke, and dust when operating at fan setting 3. Assumes closed room with 8 ft ceiling.] Perfect for small rooms. HEPA H13 FILTRATION: Trusted to remove 99.9% of harmful particles 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 35dB and max of 51dB. For the most discreet operation, enable sleep mode to completely dim the unit's panel lights. EASY TO USE FEATURES: Includes a sleek touch panel with 0-8 hour timer, fan speed, sleep mode, filter replacement indicator, and child lock, great for both kids and pets. Dual filters allow this compact unit to efficiently clean the air in any