Nasaman:
I will offer my thoughts from a different perspective. I have had very extensive experience with Panasonic fans. We currently have five of them in our home. Bottom line, they are 'spooky quiet'.
The largest unit that we have, the FV20VQ3, which is rated at 190cfm and requires 6-inch ducting, is in-audible from ~10 few away, and is barely audible standing directly underneath it.
Sorry I cant answer your question directly, but this is real world experience. I have chosen to install all of them with timers as it is SO VERY easy to mistakenly leave them on because they are so quiet.
I will offer my thoughts from a different perspective. I have had very extensive experience with Panasonic fans. We currently have five of them in our home. Bottom line, they are 'spooky quiet'.
The largest unit that we have, the FV20VQ3, which is rated at 190cfm and requires 6-inch ducting, is in-audible from ~10 few away, and is barely audible standing directly underneath it.
Sorry I cant answer your question directly, but this is real world experience. I have chosen to install all of them with timers as it is SO VERY easy to mistakenly leave them on because they are so quiet.