The Quantum Storage Systems 1275-000 Shelving Unit for Shelf Bin System (Bins Sold Separately), 12" W x 36" D x 75" H, this open shelving unit is ideal for industrial and commercial storage and organization. Easy access to product, high visibility and air flow from all sides. 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.