1200mm x 1000mm

1200mm x 800mm

800mm x 600mm

1219x1016mm - commonly used in USA/Canada

1200x1000mm - mostly used in Europe and Asia

1165x1165mm - commonly used in Australia

1067x1067mm - widely used in USA, Asia and Europe

1100x1100mm - commonly used in Asia

1200x800mm - used across Europe