878 x 20560
878 x 20560 = 18051680
Example of 878 x 20560 pixels banner dimensions.
828 x 20610 838 x 20600 848 x 20590 858 x 20580 868 x 20570
878 x 20510 878 x 20520 878 x 20530 878 x 20540 878 x 20550
878 x 20610 878 x 20600 878 x 20590 878 x 20580 878 x 20570