Modern design - Letterman M letterbox The Letterman M letterbox has a very sleek and modern look and offers the same functionality as its "big brothers". Thanks to its stainless steel and powder-coated finish, it is particularly durable. The Letterman M requires letters to be posted at the top and offers space for letters up to C4 size - without creasing. The newspaper holder, which is open on both sides, offers enough space for the daily newspaper and is mounted directly under the letterbox in the classic way. The delivery includes a stainless steel nameplate and a lock with two keys.