Happy Jack is the biggest pumpkin around??and he??s grinning right from your living room window! No messy seeds here, just the quick hanging of this poster and you??ll be the master carver in your neighborhood! WOWindow Posters are backlit plastic window posters (34.5??x60??) that light up with inside lights for the surprise of passersby. Just hang them up in 30 seconds and leave your lights on. Our posters will do the rest! Our posters are the highest quality special effect available for thematic window decorating.