27 x 41" movie poster printed on thin paper stock. This is the most common size poster, intended to be displayed in a glass "marquee" case. It's the most sought after size by collectors. First introduced in 1909, now the most widely used size in American and foreign theatre markets. Spanish, German, Danish, Swedish and Polish one sheets were usually slightly smaller than the U.S. one-sheet, approximately 25 x 39". Also, with the advent of backlit light boxes in 1985, a growing number of modern movie posters are double-sided