Flexible shelving system, available in three heights with a variety of component configurations. The width can be increased by adding extension units and more metal components. Shelving Components: Large Frame - [1] Large Extension Frame - [1] Deep Box - [3] Shallow Box - [1] Tray Shelf - [3] Small Tray Shelf - [1] Bookshelf (U-shaped to keep books in place) - [7] Suitable for Contracts use. Assembly required. 1 year warranty for manufacturing defaults.