The Graphite Modular 5x4 9U Starter Insert Pack is the easiest way to add structured internal organisation to the larger 9U box without overthinking the layout. It is intended as a sensible all-rounder that works for mixed workshop parts, light project storage, and day-to-day bench organisation. Product imagery currently reuses the 6U insert visuals as a representative reference, but this product is sized for the 5x4 9U format.