This Classroom Keepers is designed to be an affordable way to keep any desk or area organized. The two slots at the bottom work great for storing binders, notebooks, phone books and more and the top slot is perfect for holding file folders. The platform shelf is ideal for storing pencils, tape dispensers, a stapler and more. As shown here the top slot measures 8.5"H x 12.5"W x 2.5"D and the bottom two slots each measure 3.5"H x 12.5"W x 11"D. Recycled and recyclable. Click here to view the assembly instructions.