Punctuation 6 Poster Set - Classroom Language Arts Posters Punctuation 6 Poster Set Poster Set - Classroom Language Arts Posters 12" x 18" Posters on High Quality heavy 80lb satin cover paper:durable & can stand up to all kinds of abuse & won't pucker and wrinkle like others do. These new posters are a PosterEnvy EXCLUSIVE! That means you won't find it anywhere else! We ship orders out FAST (usually with 24 hours) in heavy duty cardboard tubes! PosterEnvy has sold thousands of unique educational posters to thousands of happy customers around the world!