A mountain of messy paperwork is the last thing anybody needs during work, organizing your desk, and clearing away all that paper work can be made easy. This box can be used for a simple tray, holding all your paperwork, or with the lid (which is included), it becomes a secure locking storage box. The 8.1L RUB is designed to hold a envelopes or general office supplies. The transparent design makes it easy for you to see the contents of the box, and its reinforced edges keep it super strong. If you're looking to organize your crafting products, this Really Useful Box can simply be fitted with a hobby tray designed for this very box.