840 x 12840
840 x 12840 = 10785600
Example of 840 x 12840 pixels banner dimensions.
790 x 12890 800 x 12880 810 x 12870 820 x 12860 830 x 12850
840 x 12790 840 x 12800 840 x 12810 840 x 12820 840 x 12830
840 x 12890 840 x 12880 840 x 12870 840 x 12860 840 x 12850