We have a Kobalt large tool box in the box truck, its about 4ft wide and 4ft tall.
wasnt very expensive and the drawers are way nicer than that Adrian steel. The NV we bought also had another Adrian tool box like what you would see belly mounted on a truck with a seat or work bench on top, its not that nice.
for the price I dont think its worth it, the drawers really arent that sturdy.
This one is older 2014, but it didnt seem to hold up for whatever electrician was using it in this truck