The 54 x 96" Tensioned Cinema Contour HDTV Fixed Frame Projection Screen from Da-Lite is a wall mountable aluminum frame with an HD Progessive 1.1 Perf finish, 1.1 Gain rating and Greenguard certification for use indoors. This finish is designed for use with rear mounted speakers since its built-in perforations allow sound to penetrate with no acoustic loss. The fire retardant, mildew-resistant vinyl finish delivers true color and uniform edge-to-edge image diffusion.