A4 Size Vertical (8.3 x 11.7 inches (210 x 297 mm) Perforated Length 8.3 x 5.8 inches (210 x 148 mm) With 4 File Holes (2 holes spacing is 3.2 inches (80 mm) for use with inkjet printers, copiers, and heat transfer printers. Uses static resistant paper and perforated to prevent clogging of paper. Since it is not printed, it can be used with a variety of software. Can be used for invoices, invoices, receipts, payment statements, etc. It can also be used as a multi-printer receipt.