The Collar for Modular Box is a foldable and stackable plastic element available in three sizes (800×600, 1200×800 and 1200×1000 mm) with a height of 200 mm, supplied in black. Its fork-entry design allows direct integration with Modular Box pallets, enabling modular container configurations with variable depth. When not in use, the collar folds flat to minimize storage space and reduce empty return trips in internal logistics flows.