Normal silence is only slightly quieter than this super powerful yet super quiet fan Sencor SFN3040BK!

 It has 8 speeds and only makes 31 dB of noise at the lowest speed. Only at full power, if you wish to blow air at 6.5 m/s, you will hear up to 48 dB of whirring. Most of the time it operates at levels that are referred to as “relative silence” in ordinary rooms. This fan is really quiet.

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