Also question is, how big is a sheet of poster board?
Poster boards can come in various sizes but the standard size measures 22 inches by 28 inches.
Additionally, what is the average size of a poster? 24 x 36 inches
Besides, what is a half sheet poster?
First introduced in the 1910s, half-sheet posters measure 22" x 28" and were displayed inside movie theaters to promote the current release. Half-sheet posters were printed on card stock paper and are half the size of a one sheet poster. They were usually not folded and rolled for shipping to theaters.