High Contrast Slate Gray screen fabrics absorb ambient light, improve black levels on images, and boost contrast. This fixed frame projector screen features high contrast gray soft fabric 0.9 gain. This fabric is designed to enhance the contrast and improves the black levels of your 4K HD videos and movies, so you have the best viewing experience at home or office. This high-quality projector screen is made of a sturdy aluminum frame wrapped in luxurious black velvet.