Universal Deluxe Quick Set-up String-and-Button Boxes are ideal for storing heavy files and keeping documents organized. The sturdy, corrugated construction adds strength and value. Equipped with a string-and-button tie closure, you can securely store box contents and not worry about them tipping over and spilling out. Save assembly time with this light-duty box. Great for archiving and storing files and documents on storage racks, file cabinets, or other flat surfaces.