what hood fans are quiet ?

[GMGQ]

Computer Case Fans, 120mm. I use (2) Panaflo's in my hood.

I just power them each with an old AC Adapter that I found in my surplus drawer. Doesnt matter too much if the transformers are not 12V either (the fans will just be underpowered). If you do need them to run faster, then you get pick up a cheap 12V at the flea market or at London Drugs.