Don't just toss items into a container and consider them organized--subdivide items by category and make it fast and easy to find what you are looking for. Cropper Hopper™ Divided Storage will help you keep your supplies organized and damage-free. Perfect to use at home, at the office and much more. They are acid-free. Paper Holder Storage Expandable- 12"x 12" Projections Paper Holder expands to hold over 900 sheets of paper. Each section is tabbed for reference. May be used for top loading or side loading paper and expands up to 9". Use upright or lay it down to fit storage needs. Made from a polypropylene material; printed on the outside and clear inside. The outside has a Black background with a White flourish design. Designed for desktop storage. Closed it is approximately 14.5"x 14".