I am in the process of testing a unit with a very loud fan, at least to my ears. I looked inside, got the make and model but I am unable to determine what the db measurements mean. Could someone click on the link and let me know if this fan is considered loud or quiet? Thanks, its the M33416 at the top
http://www.nidec.com/ta350dc.html
http://www.nidec.com/ta350dc.html