The most common form factor in the wild is the 8.5 x 11, usually folded once to make it 8.5 x 5.5. The most common clipboard is actually one that folds exactly

The most common form factor in the wild is the 8.5 x 11, usually folded once to make it 8.5 x 5.5. The most common clipboard is actually one that folds exactly like that: http://www.whitecoatclipboard.com/ http://www.whitecoatclipboard.com/