[Byobu (folding screen)] Furosaki (covered with fabric) The back side is covered with torinoko.

Furosaki Byobu is one of the tea ceremony utensils, and it is a folding screen placed on the other side of the utensil tatami mat when serving tea in the hall. By placing it, the purpose is to enhance the utensil. It is also simply called furosaki. The basic style of the Rikyu style is 2 shaku 4 sun in height, 3 shaku 5 bu in width and 5 bu square in width, with shirabari of torinoko and roiroen, but actually there are various styles.

ウィキペディア