Thanks guys!! :thumbsup:
Sones are a linear measurement, like a tape measure,
double the sones, the sound is twice as loud,,
dB is an exponential measurement,,
1 sone is supposed to be the sound of a quiet room , Panasonic has one fan that is rated at 0.3 sones,, and 150 CFM,,
it uses 6 inch duct,,
Hmmmmmmmmmmm :confused2:
At 0.3 sones, it must take away noise from a quite room,,,![]()
:laughing: