The Alen BreatheSmart 45i is ideal for medium, large, and extra large-sized living spaces including living rooms, bedrooms, nurseries, laundry rooms, guest rooms, bathrooms, offices, kitchens, basements and more! Developed by NASA airflow engineers, the BreatheSmart 45i cleans 800 SqFt every 30 minutes. Alen’s True HEPA filter is best for removing airborne allergens, dust, orders, pet smells, cooking odors and smoke. It comes with a high capacity True HEPA layer to capture 99.97% of airborne particles down to 0.3 microns. A Laser Smart Sensor detects airborne particles and self-adjusts to address the challenges of your ever-changing environment. The LED color display allows you to see your air quality at a glance. Built with your comfort in mind, the BreatheSmart 45i air cleaner has WhisperMax Technology so you can rest peacefully. It has four fan speed options; the lowest produces such a small frequency, like a whisper. On the turbo fan setting the BreatheSmart 45i emits a frequency called pink noise which is a lower tone then the white noise and sounds like a gentle rainfall. The CFM (airflow in Cubic Feet per Minute) includes 4 speeds and noise levels: Speed 1: 53 CFM; Speed 2: 135 CFM; Speed 3: 147 CFM; Turbo: 187 CFM; Noise levels Speed 1: 39 dB (whisper); Speed 2: 42 dB (light rainfall); Speed 3: 49 dB (heavy rainfall); Turbo: 55 dB (medium box fan). Mix and match the colors in your house, or use the BreatheSmart 45i to add that pop of color to accentuate your personal style. It is a sleek air purifier with a modern and stylish design to fit into any decor! The BreatheSmart 45i is the only one in it's class that gives you look and feel of the signature BreatheSmart collection. It can be used in any space up to 800 Square Feet and has low energy consumption - 50 watts on Turbo speed. The lowest setting will use less than 50 cents a month in electricity. Includes: 1 BreatheSmart 45i Air Purifier, 1 HEPA-Pure Filter (Sku: B4-Pure), 1 Panel