Seinfeld George Costanza Poster 24" x 36" New! All of our posters are commercially printed on 80-100lb. (118-148 GSM) paper stock. We do not sell any desktop inkjet, laser prints or any other type of "do-it-yourself" output. Our Posters are professionally manufactured in the USA. Our 22.375" x 34" Posters are individually rolled, labeled, and wrapped in plastic sleeves.