Dollar coins have never been very popular in the United States since the removal of specie coins from circulation. Despite efforts by the government to promote their use, such as the Presidential $1 Coin Program, most Americans currently use the one-dollar bill rather than dollar coins.
Width and Height. An interior passage door is any door that you use to move from one room to another, and the code requires these to be 80 inches in height. Because this corresponds to 6 feet 8 inches, door manufacturers refer to this as a 6/8 door.
1 Standard widths include 18, 20, 24, 28, 30, 32 and 36 doors. 2  Standard heights include 80, 84 and 96 doors. 3  Customized sizes are available in a range of different designs.  To measure for a prehung door, remove the interior casing and measure the opening.