A double sided screen is a projection screen that has two viewing surfaces, one on each side of the screen. You can use it to display different or complementary images on both sides of the screen, creating a dynamic and interactive display. For example, you can use a double sided screen to show a map on one side and a video on the other side, or to show a product on one side and its features on the other side. A double sided screen can also be used to create a sense of depth or movement, by showing images that are related or opposite to each other on both sides of the screen.