This case features durable structural foam box walls of the tool storage give robust structure to the stand alone units. The tool chest features an integrated water seal in every unit for protection of contents and long life for your equipment. IP65 rating – The portable tool chest is water and dust resistant. Durable 4mm thick structural foam box wall gives robust structure to the stand alone units. Integrated water seal in every unit for protection of contents and long life for your equipment. Metal carrier with adjustable foldable brackets allow tailored configuration. Central locking mechanism secures the box to the frame. Deep removable tray designed to fit a cordless tool battery and charger