Index Cards DIN A6 Landscape. Index card board 170 g/m². For more system when working and learning! Chlorine-free bleached. Card format: DIN A6 landscape. Packed in foil, 100 sheets. Made in Germany. Material: index card board 170 g/m². Card dimensions (W x H): 148 x 105 mm. Ruling: fine, thin, blue lines. Header line: double. Colour of the index card board: white.