Hey folks I bought a fan from this guy last year. Went back for a new project and found my book mark was a dead end.
New site here:
http://www.rvvent.com/
Last I check he had some of the best prices, haven't researched lately.
ADOHEN SUPPLY CO is where I just bought a Fantastic unit. The person at Fantastic company pointed me thier direction. I got just the right combo sized for the Casita where the A/C is comming off the roof.