Just a suggestion
Do you want to do away with the power vent.If you do,you will not be sorry.I eliminated mine 5 years ago and installed an insulated stainless chimney.No more noise and the chimney and oil smells are gone for good.These vents can create quite the negative pressure in your house if you don't have enough make-up(outside) air.I beleive newer models will bring outside air next the exhaust in the same pipe to offset some of the problems I was having.
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SIKSUKR
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