18 cm by 5 cm rice paper six-foot couplets. Because the size of six-foot rice paper is 18cm× 97cm (length× width), and the size of six-foot couplet is 1/2, 18cm× 49cm, so 18cm× 5cm rice paper is the closest to six-foot couplet.
Xuan paper is divided into three categories according to the proportion of raw materials: extra clean skin, clean skin and cotton material.