DL Paper Size Dimensions


110 × 220 mm


A DL envelope measures 110 × 220 mm, and is the most common envelope used in business. An A4 piece of paper folded into thirds lengthways will fit into a DL envelope. DL is identified by ISO 269 as 'Dimension Lengthwise'. It was previously known as DIN Lang in Germany where it originated in the 1920s.

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