The Alen BreatheSmart 35i is the ultimate solution for tackling air quality concerns in smaller spaces. Here's why it stands out: Advanced Filtration: H13 filter captures 99.9% of airborne particles as small as 0.1 micron. With a 190 cfm CADR Rating. Ideal for your concerns: Perfect for small rooms (500-1,000 sq ft) with allergies, asthma, smoke, and odor concerns. Quiet Operation: Powerful yet whisper-quiet at 42 dB maximum noise for non disturbance sleep. Smart Features: Color-coded air quality indicator. Control and monitor anywhere using your Alen App.