This is not your friendly Jack O’Lantern! No need to carve a pumpkin and set it in your window this year, this grinning creep will do the trick on your treats. This creepy decoration is peeking out to see who its next victim is! 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.