Letter (paper size)

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The paper size Letter is the most common paper size for office use in the United States, Canada and Mexico; all other countries worldwide use the German-standardized A4 sized paper. Letter size is 8½ × 11 inches, or 216 × 279 mm. In the Philippines, this paper size is commonly known as 'Short'.[citation needed]

Ronald Reagan made this the paper size for U.S. federal forms, previously, a smaller size was used.[citation needed]

People may often see paper described as 20 pound or 24 pound -- the weight of 500 sheets of 17" x 22" paper, which the paper manufacturer will then cut into 4 letter-sized reams. Therefore, 1 ream of 20 pound letter-sized paper weighs 5 pounds.

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