Storing and organising your letters, invoices and other important documents is easy with the Celco Letter Sorter. The sorter is made with pre-labelled rigid flaps attached to a solid wooden base allowing you to store your letters alphabetically or by month, week or day. There are 31 different, pre-labelled sections so you can store your letters alphabetically or by date. The sorter is made with a solid wooden base and durable, rigid flaps. Each flap opens flat for ease of use.