My son, Dave, installed a Hurricane last fall in his commercial troller. It is a lovely machine, and best of all it is silent. He installed per ITR recommendation and you cant hear it inside or outside. Maybe he will buy his old dad one for a birthday present... Jim Donnelly Troller Fan Isle. _________________________________________________________________ Protect your PC - get McAfee.com VirusScan Online http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963