Three-tiered filtration scheme: HEPA filter, prefilter, and active carbon filter combined neutralizes 99.97% of bacteria and dust 95 m3/h is the clean air delivery rate (CADR) silent: Level of sound 30 dB(A) Ionic mechanism Timing range: 2–8 hours Dim light mode three different ventilation rates indicator of filter change Perfect for up to 25 m2 of surface area - Fan speeds: 3