The great thing about a desk tray is that it can be anything. There are two file folder sized pockets and one sized for envelopes; placement is up to you. Trendy Office Supplies Are In! Certain titles may not be available to all consumers because of age restrictions. The right filing cabinet will help you get organized, leaving your desk and mind clear and ready for work. This mail sorter with unique arc design is convenient for customers to get documents, letters, files, etc. Keeps papers and other items handy.