DL letter envelopes are popular envelopes used for sending letters or documents. DL envelopes measure 210 x 110 mm, which means they can fit neatly folded A4 sheets. They are most often white in colour. They are used for business or private correspondence. They make it possible to aesthetically pack documents, most often folded into 3 sections. They are available with a foil window, which saves time on addressing the postage. We offer classic DL envelopes, white, printed or with a window.