22:17, commonly known as 8.5 x 11 inches, is the aspect ratio of ANSI Letter standard paper when positioned horizontally. Printers and scanners sold in the US and Canada are generally designed for this format. As such, this aspect ratio may be seen in traditional artwork drawn on US standard printer paper, or digital artwork drawn over a sketch on printer paper.

See also:

• 17:22 - the aspect ratio of ANSI Letter paper when positioned vertically.