Tonneau with toolbox??

Does anyone make a tonneau cover that works with a toolbox installed? I'm going to be moving my son to college soon and don't want his stuff to be exposed to the weather.

 

I did a move live that once with a tool box. My cheap solution was to just use some of those 3 mil plastic contractors bags. The added bonus, most people think it's nothing but garbage and don't mess with it.
Keeps everything dry and easy to handle when you get to your destination.

 

Tool box under toneau cover.

 

Fits under my undercover. Toolbox is RDS

 

Unfortunately I already have a toolbox over the rails. Looking for something to fill just the remaining bed space

 

If I hear you correctly you want to cover the bed. Uhaul trailers are a very cheap temporary solution.