See also: Progressive pop and Art rock. The term progressive rock is synonymous with art rock, classical rock, and symphonic rock. Historically, art rock has been used to describe at least two related, but distinct, types of rock music.
The usual range of sizes for internal doors is: 6'6 x 2'3 (1981mm x 686mm), 6'6 x 2'6 (1981mm x 762mm), and 6'6 x 2'9 (1981mm x 838mm). Kitchen Cupboard Door Sizes. The standard widths for kitchen cupboard doors are 300mm, 400mm, 500mm, 600mm, 800mm, and 1000mm. Wall unit doors are usually 600mm or 720mm high.
From the 2006 IRC. (underlining and bold are mine) - R311.4.2 Door type and size. The required exit door shall be a side-hinged door not less than 3 feet (914 mm) in width and 6 feet 8 inches (2032 mm) in height. Other doors shall not be required to comply with these minimum dimensions. Even the 2006 IBC includes exceptions to the required door widths stated in it: - 1008.1.1 Size of doors.