What is the name or format of this calligraphy paper?

There is a common one: a square grid of *** 14 (vertical) *8 (horizontal), with a row of rectangles as high and as wide as the right on the far left for writing signatures, as shown in the figure (which is relatively simple).

Others, such as fan (two adjacent sentences must be different in length, usually odd sentences are long and even sentences are short), couplets can be used.

According to the number of words in calligraphy, probably arrange the version, and the last sentence should not be too short. Just write it directly on rice paper.