280 x 3840
280 x 3840 = 1075200
Example of 280 x 3840 pixels banner dimensions.
230 x 3890 240 x 3880 250 x 3870 260 x 3860 270 x 3850
280 x 3790 280 x 3800 280 x 3810 280 x 3820 280 x 3830
280 x 3890 280 x 3880 280 x 3870 280 x 3860 280 x 3850