In this article, we explain what an enclosure is and how to cite one, and we provide an example of an enclosure in a business letter. Add an enclosure notation after your signature at the end of the letter, and abbreviate it with "Enc." or "Encl.You could say, "the following items are enclosed:". You could also say, "please find the enclosed items listed below:" and then list the items. If you are enclosing materials with your business letter, you'll need an enclosure notiation. Learn more with our enclosure letter sample. Fill in the names and phone numbers of the Regional Landscape. Perhaps because enclosure letters are so mundane, they have often been a target for the use of stilted and somewhat absurd lan- guage. Stored on site in a secure enclosure acceptable to the Consultant. As such, it is a material consideration in the determination of planning and advertisement applications.