The Really Useful Box® pack of five 8.1 liter capacity boxes in clear can be recycled. Made with 100 percent polypropylene, these boxes are constructed for durability and have reinforced sides to increase compression strength so boxes maintain their shape. Totally flat bottom increases rigidity for stability and allows for perfect stacking with or without lid. The lockable lid is secured with two latchable handles to protect contents of the box from dust and water splashes. It measures 5" x 11" x 14" and is ideal for envelopes and office storage