Sizes for A and B formats in ISO system.

ISO & JIS A Sizes			ISO/DIN B Sizes			ISO C Sizes
4A	1682 x 2378		4B	2000 x 2828		postcards, folders;
						envelopes for ISO A sizes
2A	1189 x 1682		2B	1414 x 2000
A0	841 x 1189		B0	1000 x 1414		C0	917 x 1297
A1	594 x 841		B1	707 x 1000		C1	648 x 917
A2	420 x 594		B2	500 x 707		C2	458 x 648
A3	297 x 420		B3	353 x 500		C3	324 x 458
A4	210 x 297		B4	250 x 353		C4	229 x 324
A5	148 x 210		B5	176 x 250		C5	162 x 229
A6	105 x 148		B6	125 x 176		C6	114 x 162
A7	74 x 105		B7	88 x 125		C7	81 x 114
A8	52 x 74		B8	62 x 88		C8	57 x 81
A9	37 x 52		B9	44 x 62		C9	40 x 57
A10	26 x 37		B10	31 x 44		C10	28 x 40