20" x 30" 508mm x 762mm 492mm x 746mm 544mm x 797mm x 12mm 2.46kg. A2 420mm x 594mm 400mm x 575mm 450mm x 625mm x 12mm 0.71kg. A3 297mm x 420mm 275mm x 399mm 327mm x 448mm x 12mm 0.44kg. A4 210mm x 297mm 190mm x 277mm 240mm x 325mm x 12mm 0.28kg.
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