280 x 12800
280 x 12800 = 3584000
Example of 280 x 12800 pixels banner dimensions.
230 x 12850 240 x 12840 250 x 12830 260 x 12820 270 x 12810
280 x 12750 280 x 12760 280 x 12770 280 x 12780 280 x 12790
280 x 12850 280 x 12840 280 x 12830 280 x 12820 280 x 12810