A simple and lightweight solution that provides shippers of dry bulk material an apparatus that facilitates the efficiencies of backhaul pricing in the form of a trailer that is convertible from a configuration used with dry bulk material in an efficient manner (i.e., sealed to outside exposure, food safe, easily cleaned, etc.) to a configuration used with packaged goods as efficiently as a standard van trailer (i.e., must allow forklifts to load palletized and packaged goods for conventional loading and unloading at conventional warehouses with conventional loading docks).