A4 Size: Height 8.3 x 11.7 inches (210 x 297 mm); Perforated Length: 8.3 x 3.9 inches (210 x 99 mm); Can be used with inkjet printers, copiers, and heat transfer printers. Made with static electricity resistant paper, and is perforated to prevent paper jams. Since it is not printed, it can be used with a variety of software. Can be used for invoices, invoices, receipts, payment statements, etc.