The present invention teaches an apparatus and method used in connection with a forklift truck for quickly and easily nesting and un-nesting bulk seed boxes. A box inverter apparatus includes first and second rotary clamp pads, each clamp pad having a box engaging surface and an opposing rear surface. The first and second rotary clamp pads are positioned such that the box engaging surfaces thereof face one another in a spaced apart relationship. First and second spindle and bearing assemblies are associated with and extend radially outwardly from the opposing rear surfaces of the first and second rotary clamp pads, respectively. Each of the spindle and bearing assemblies has a first end attached to the rear surface of the rotary clamp pad and a second end attached to a frame such that each spindle and bearing assembly permits rotation of the rotary clamp pad relative to the frame. Means for adjusting the distance between the spaced apart facing box engaging surfaces of the first and second rotary clamp pad as
