Results vary. Grommets (actually, piece of rubber band) worked for me since the sound was mostly from the drive vibration; YMMV. As for cork, it's the same thing. LegendNH recently did a very good ...
Online they chare about 50 cents each - I paid 8 cents each at the hardware store. <P>I can't say that they help much (I also use Panaflo fans), but I dig how the fans look using #6 long sheet metal ...
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