1230 x 20000
1230 x 20000 = 24600000
Example of 1230 x 20000 pixels banner dimensions.
1180 x 20050 1190 x 20040 1200 x 20030 1210 x 20020 1220 x 20010
1230 x 19950 1230 x 19960 1230 x 19970 1230 x 19980 1230 x 19990
1230 x 20050 1230 x 20040 1230 x 20030 1230 x 20020 1230 x 20010