【正文】
B2 – 515x 728 mmB3 – 353 x 500 mm B3 – 364 x 515 mmB4 – 250 x 353 mm B4 – 257 x 364 mmB5 – 176 x 250 mm B5 – 182 x 257 mmB6 – 125 x 176 mm B6 – 128 x 182 mmB7 – 88 x 125 mm B7 – 91 x 128 mmB8 – 62 x 88 mm B8 – 45 x 64 mm C系列-公制,主要用在信封:C0 – 917 x 1297 mmC1 – 648 x 917 mmC2 – 458 x 648 mmC3 – 324 x 458 mmC4 – 229 x 324 mm(A4文件用C4信封再裝進B4大信封)C5 – 162 x 229 mmC6 – 114 x 162 mmC7 – 81 x 114 mmC8 – 57 x 81 mm