310 x 12900
310 x 12900 = 3999000
Example of 310 x 12900 pixels banner dimensions.
260 x 12950 270 x 12940 280 x 12930 290 x 12920 300 x 12910
310 x 12850 310 x 12860 310 x 12870 310 x 12880 310 x 12890
310 x 12950 310 x 12940 310 x 12930 310 x 12920 310 x 12910