So I finally got around to testing the Fantastic Vent in my bus. It's quiet, has three speeds, blows in and out, seems well engineered and basically works very well, but the trim ring is all busted up and the dome got scratched up when the previous driver tried to drive a 10' 6" bus under something with 10' 5" clearance.
Anyway, I called Fantastic Vent to order new parts and told the Bob-the-parts-guy I needed the trim ring and wanted a price for the dome. He said that the dome was exactly the same price as the trim ring. When I asked what THAT price might be he said "exactly zero." Apparently, the company decided to put their advertising budget into free replacement parts and let word of mouth do the advertising. The guy was even a bit appologetic about charging shipping to deliver the parts. I told him that I bought the bus second hand and was perfectly willing to pay for the parts (fair is fair) but, bottom line, they're on their way free of charge.
I had heard that this company was a stand-up act but this totally blew me away. I like their vent but the customer service is simply stellar.