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.
When Metric units were made compulsory in Australia , the common standard for interior household doors was set at 820mm which will now apply forever. The opening for a standard door is about 4mm extra, and the 'Door Stops' which are always 10 or 12mm thick each side, reduces the width of the opening to about 800mm .