Harry Potter Poster Book Super Set ~ 12 Harry Potter Posters Featuring Harry, Ron, Hermione, and More (Harry Potter Room Decor). Harry Potter posters set with your favorite characters and logos from the Harry Potter franchise. Harry Potter wall decor set includes 12 high quality Harry Potter posters -- each poster for wall measures 8 x 11 inches. The perfect size for walls, lockers, and offices. Great gift for your favorite Harry Potter enthusiast! Fun for all ages! Includes Harry Potter device decals. Officially licensed Harry Potter decorations for boys and girls alike.