870 x 3970
870 x 3970 = 3453900
Example of 870 x 3970 pixels banner dimensions.
820 x 4020 830 x 4010 840 x 4000 850 x 3990 860 x 3980
870 x 3920 870 x 3930 870 x 3940 870 x 3950 870 x 3960
870 x 4020 870 x 4010 870 x 4000 870 x 3990 870 x 3980