The Stanley Vidmar 5S Cabinet comes with metal pegboard inserts, plexiglass or solid hinged doors and a heavy duty lock and key system. The clear doors provides instant visibility of tools and/or parts at point of use. The solid hinged door option provides additional metal pegboard storage to optimize every inch of the cabinet. The cabinet fulfills Lean, 5S and Kaizen storage requirements by organizing and managing workspaces to improve efficiency by optimizing workflow. It stores the same amount of items as five open shelving units, according to the company.