280 x 12500
280 x 12500 = 3500000
Example of 280 x 12500 pixels banner dimensions.
230 x 12550 240 x 12540 250 x 12530 260 x 12520 270 x 12510
280 x 12450 280 x 12460 280 x 12470 280 x 12480 280 x 12490
280 x 12550 280 x 12540 280 x 12530 280 x 12520 280 x 12510