A0 841 × 1189 mm 33.1 × 46.8 in (LARGEST). 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. Easy to apply to windows, walls, flat surfaces - can be affixed with tacks, clear adhesive sticky pads, tape, velcro etc.
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