"SAIL LOCO" wrote in message
...
Why not use a Whisper fan? They are made for this purpose. My
Dynaco Stereo
400 uses one.
S/V Express 30 "Ringmaster"
Trains are a winter sport

OK, I can find teh specs, but googling has not unearthed a source
yet. One 'click to order' link led to a page not found, but that
is as close as I've gotten so far.