1280 x 21600
1280 x 21600 = 27648000
Example of 1280 x 21600 pixels banner dimensions.
1230 x 21650 1240 x 21640 1250 x 21630 1260 x 21620 1270 x 21610
1280 x 21550 1280 x 21560 1280 x 21570 1280 x 21580 1280 x 21590
1280 x 21650 1280 x 21640 1280 x 21630 1280 x 21620 1280 x 21610