Rock America Large Music Posters are highest quality, licensed giant band posters. Also called “Subway Posters”, the approximate size of each of our large music posters is 40” X 54” (inches). Rock America large music posters are printed on high quality poster paper and ship rolled and wrapped in plastic before being placed in a cardboard tube for protection. Support your favorite band in a big way! Beatles Street giant poster. Official Beatles giant poster printed on high quality poster paper.