320 x 3990
320 x 3990 = 1276800
Example of 320 x 3990 pixels banner dimensions.
270 x 4040 280 x 4030 290 x 4020 300 x 4010 310 x 4000
320 x 3940 320 x 3950 320 x 3960 320 x 3970 320 x 3980
320 x 4040 320 x 4030 320 x 4020 320 x 4010 320 x 4000