990 x 21000
990 x 21000 = 20790000
Example of 990 x 21000 pixels banner dimensions.
940 x 21050 950 x 21040 960 x 21030 970 x 21020 980 x 21010
990 x 20950 990 x 20960 990 x 20970 990 x 20980 990 x 20990
990 x 21050 990 x 21040 990 x 21030 990 x 21020 990 x 21010