"Doufang" is a common term in the field of Chinese painting. A box is a bucket, and the most common one is a ruler of 69*69cm(2 square feet) with a width of 4 square feet. This ruler is made of a four-foot poster (2 square feet wide and 4 square feet long) along the length direction.
The size of 4 feet square is 69 x 68, and the size of 6 feet square is 97 x 90, in centimeters.
Extended data:
Specification of rice paper (unit: cm)
Three-leg fully open: 100 x 55 Three-leg single open: 100 x 27
Three-foot horizontal batch: 100 x 55 three-foot couplet: 100 x 27
Three-foot bucket: 55 x 50
Four-foot wide opening: 138 x 69?
Four-foot single belt: 138 x 34
Four-foot horizontal batch: 138 x 69?
Four-foot couplets: 138 x 34
Four-foot barrel: 69 x 68?
Four feet three open: 69 x 46
Four feet and four open: 69 x 34?
Four feet six inches wide: 46 x 34 inches
Four feet eight inches: 35 x 34
Five feet fully open: 153 x 84?
Five-foot single: 153 x 42
Five-foot horizontal batch: 153 x 84?
Five-foot couplets: 153 x 42
Five-foot barrel: 84 x 77
Six feet fully open: 180 x 97?
Six feet three inches wide: 97 x 60
Six-foot couplet: 180 x 49?
Six-foot barrel: 97 x 90
Seven feet fully open: 238 x 129
Eight feet fully open: 248 x 129
Eight-foot screen: 234 x 53
One foot and two feet: 367 x 144
One foot and six feet: 503 x 193
Baidu Encyclopedia-Doufang
Baidu Encyclopedia-specifications of rice paper