Letter (paper size) - Wikipedia
Letter or ANSI Letter is a paper size standard defined by the American National Standards Institute, commonly used as home or office stationery in the United States, Canada, Chile, Colombia, Costa Rica, Mexico, Panama, Guatemala, the Dominican Republic and the Philippines.It measures 8.5 by 11 inches (215.9 by 279.4 mm), similar to the A4 paper standard used by most other countries, defined in ...