Originally Posted by EastCoastCB
Yeah it forces air down to keep the back windows clean. I really want one just for the cool factor.
Mine is currently off since it needs to be repainted (it's aluminum, BTW, so it's extremely light). The mounting for them is actually pretty simple, it's just eight 5/16 rivnuts run into the end cap (no special bracing or anything on the bus needed) and then a couple of simple brackets you bolt together.
I'm sure I won't have it back on until next year some time, if that. I could probably be talked into trading it for something useful. I called the company that makes them, and the guy I talked to said they retail for $650 to $1000 (I would not expect anywhere close to that in value, just thought it was interesting).