DefaultComboBoxModel comboBoxModel = new DefaultComboBoxModel();
comboBoxModel.addElement(new PageSizeItem(PageSize.A0, "A0", 841, 1189, 33.1, 46.8));
comboBoxModel.addElement(new PageSizeItem(PageSize.A1, "A1", 594, 841, 23.4, 33.1));
comboBoxModel.addElement(new PageSizeItem(PageSize.A2, "A2", 420, 594, 16.5, 23.4));
comboBoxModel.addElement(new PageSizeItem(PageSize.A3, "A3", 297, 420, 11.7, 16.5));
comboBoxModel.addElement(new PageSizeItem(PageSize.A4, "A4", 210, 297, 8.3, 11.7));
comboBoxModel.addElement(new PageSizeItem(PageSize.A5, "A5", 148, 210, 5.8, 8.3));
comboBoxModel.addElement(new PageSizeItem(PageSize.ARCH_A, "ARCH A", 229, 305, 9, 12));
comboBoxModel.addElement(new PageSizeItem(PageSize.ARCH_B, "ARCH B", 305, 457, 12, 18));
comboBoxModel.addElement(new PageSizeItem(PageSize.ARCH_C, "ARCH C", 457, 610, 18, 24));
comboBoxModel.addElement(new PageSizeItem(PageSize.ARCH_D, "ARCH D", 610, 914, 24, 36));