Backlit Posters are a 9mil semi-rigid material with a glossy topcoat. They allow customers to create messaging that lights up and stands out with vivid backlit graphics and superior light diffusion. Great for light box applications, this product is commonly used for Exhibition Panels, POP Displays, Movie Theater Posters, Bus Stop / Transportation Signage and more. Backlit Posters can be used outdoors as long as they are placed inside a light-box that provides UV protectant sheets such as styrene or acrylic.