As others have pointed out, this box will not take a full A4 sheet, despite claims in the listing and on the box packaging itself. This amounts, I believe, to misleading advertising and contravenes Trade descriptions - Amazon please note!. A4 size is 297x210mm and, while there is plenty of width, the box's internal 'long' dimension is 295. An A4 document will jut about squash in, but not if it has a rigid spine. The box is, however, sturdy an well-made - entirely suitable for passports, birth certificates and such. It's just a pity that the internal dimension isn't a few millimeters longer.