Manufacturer Code : 45007AV. Avery 5-Tier Steel Letter Tray Rack A4/Foolscap Landscape Black - 605SBLK.Do you receive a lot of mail? If you work in an office where mail is sent to lots of different people you will need to sort the mail for each recipient. If its put on peoples desk it may not be seen or get put to one side. There is a system that means all the mail is kept in one place and a letter rack or letter tray is the ideal solution. This 5-tier steel letter rack is durable so it wont get damaged by daily use. You can store mail for either five people or perhaps five departments if you work in a larger organisation.