[cd7234]

Size Millimeters Approx Inches
B0 1000 X 1414 39 3/8 X 55 5/8
B1 707 X 1000 27 7/8 X 39 3/8
B2 500 X 707 19 5/8 X 27 7/8
B3 353 X 500 12 7/8 X 19 5/8
B4 250 X 353 9 7/8 X 12 7/8
B5 176 X 250 7 X 9 7/8
B6 125 X 176 5 X 7
B7 88 X 125 3 1/2 X 5
B8 62 X 88 2 1/2 X 3/12
B9 44 X 62 1 3/4 X 2 1/2
B10 31 X 44 1 1/4 X 1 3/4