840 x 40

840 x 40 = 33600

Example of 840 x 40 pixels banner dimensions.

790 x 90 800 x 80 810 x 70 820 x 60 830 x 50

840 x -10 840 x 0 840 x 10 840 x 20 840 x 30

840 x 90 840 x 80 840 x 70 840 x 60 840 x 50

850 x 50 860 x 60 870 x 70 880 x 80 890 x 90