I looked at the links provided. The fan pulls a whopping 106cfm. The fan is also an axial design that's more useful as a computer cooling fan than a spray booth fan. There is no provision for exterior ducting--and there's no carbon filter. Even with the provision for exterior ducting, the fan probably won't generate the necessary velocity pressure to get the vapors to the other end.
Bottom line: If you can't exhaust vapors to the outside you're spending $120 for absolutely nothing.
Sorry, but seeing stuff like this pi&*^#es me off. Maybe I should start designing booths and taking advantage of unsuspecting modelers....
Gip