This Medify Air MA-14 air purifier is designed for maximum coverage, cleaning small spaces up to 36 sq m in one hour or 18 sq m in 30 minutes with a CADR of 120. It's ideal for various indoor environments including homes, apartments, bedrooms, living rooms, offices, schools, universities, classrooms, hospitals, restaurants, and other businesses. The purifier features HEPA H13 filtration, trusted to remove 99.9% of harmful particles down to 0.1 microns, including allergens, odors, VOCs, smoke, pollen, pet dander, dust, and smog. It captures finer particles than HEPA H11 filters. Operating at 220 Volts, it offers three fan speeds, with the lowest setting being virtually silent. The maximum noise level is 55 dB. For discreet operation, a sleep mode is available to dim the unit's panel lights.