The Graphite Modular 5x4 15U Craft Insert Pack gives you a cleaner way to organise creative tools, hobby supplies, and fiddly workshop items inside the larger 15U storage box. It is designed for customers who want more structure than a single open cavity, while keeping the same Gridfinity-compatible approach across the wider system. Product imagery currently reuses the 6U insert visuals as a representative reference, but this product is sized for the 5x4 15U format.