A4_ex
Term definition for: A4_ex - Displayed as "A4 Extended (250 by 297 mm)"
This form is paper that is extra wide (250 mm or 9.8 inches) compared to standard A4 width, but standard A4 length (297 mm or 11.7 inches). Note that this is not a parallel to the A3 sizes, and not a folio form.