850 x 3990
850 x 3990 = 3391500
Example of 850 x 3990 pixels banner dimensions.
800 x 4040 810 x 4030 820 x 4020 830 x 4010 840 x 4000
850 x 3940 850 x 3950 850 x 3960 850 x 3970 850 x 3980
850 x 4040 850 x 4030 850 x 4020 850 x 4010 850 x 4000