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Originally Posted by OldSkool1010  Good call on the air restriction. My fan makes more noise when I have some of the intakes closed off.
He is using aluminum ducting; when he wrapped it in insulation that dropped a lot of the noise, but it sounds like the fan is humming and it is being resonated by the mounting. |
Bingo.. the heating style insulated ducting killed the noise from the end of the duct, its just where the fan is mounted itself seems to be making noise