A1, 594 × 841 mm, 23.4 × 33.1 in. A2, 420 × 594 mm, 16.5 × 23.4 in. A3, 297 × 420 mm, 11.7 × 16.5 in. A4, 210 × 297 mm, 8.3 × 11.7 in.
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