Achieve optimal organization with JAM Paper & Envelope stackable desk tray sets! These colorful trays will help you clean up your desktop. Stack them or separate them whichever is most convenient for you! Paper trays can hold up to 300 sheets of letter size paper each. You will have all the paper storage you could ever need. The office supply tray is perfect for holding an extensive variety of desk supplies. Fits pens and pencils, staplers and staples, paperclips, and much more. Combine the office supply and paper trays for the ultimate desk organizer! Organize your files in the way that makes most sense to you.