644 x 20000
644 x 20000 = 12880000
Example of 644 x 20000 pixels banner dimensions.
594 x 20050 604 x 20040 614 x 20030 624 x 20020 634 x 20010
644 x 19950 644 x 19960 644 x 19970 644 x 19980 644 x 19990
644 x 20050 644 x 20040 644 x 20030 644 x 20020 644 x 20010