840 x 9990
840 x 9990 = 8391600
Example of 840 x 9990 pixels banner dimensions.
790 x 10040 800 x 10030 810 x 10020 820 x 10010 830 x 10000
840 x 9940 840 x 9950 840 x 9960 840 x 9970 840 x 9980
840 x 10040 840 x 10030 840 x 10020 840 x 10010 840 x 10000