It won't...
Wish I would have saved the money here as well. All I had was the factory jack and some odds and ends in it and it won't even hold up to a moderately rough gravel road. They also show how it folds up nice and flat. It doesn't and even if it did there is no way of securing it up. Using it for a beer cooler? HA! The box doesn't seal closed with the cover so what's the point if it's insulated? You'd be lucky to make it to the stadium with any ice at all, not to mention that anything else you had in the back end would be soaking wet. Wouldn't be surprised if you had a half dozen or so bottles rolling around the back end at that point either. Oh yeah... Good luck taking fitting it in there too. Size it so the bracket ears fit over the rail and it won't fit between the bak cover stand off legs. Fit between them and it won't even come close to hanging on the rails.
Bak box= great idea that fell way short of the mark.
