The Quantum Storage Systems CL1839-604BL Closed Shelving System with Super Tuff Euro Drawers, 18" D x 36" W x 39" H, Blue is a complete bin system - 7 shelf unit 18" x 36" x 39" with 54 QED604 shelf bins. Closed shelving provides extra protection from dirt & dust, creates separation between areas and prevents product from falling off sides or back of unit. Shelves are engineered for superior strength and are triple bent on all four sides. Quantum Storage Systems manufactures storage bins and systems, and steel and wire shelving. The company is headquartered in Miami, FL.