Like one of those Home Depot brochures? To advertise the fans?
Have you ever seen The Fan Book? It reads like an encyclopedia, with a strong undertone of "buy Casablanca, they're the best!". The 26-page Encon brochure, I'm betting, is similar ("buy Encon, you can save money!"), but without the hundred-odd pages of scientific stuff.
Encon, for those of you who don't know, is a portmanteau of "energy conservation".