Instahibit 100inches Diagonal 16:9 Manual Pull Down Projection Screen Self-Locking 87" x 49" White Instahibit 100" diagonal, 16:9 pull-down projector screen Adjustable height and aspect ratio - built-in self-lock mechanism, locks the screen at different heights to fit different formats Dual wall & ceiling installation design for flexible installation 160 degree large viewing angle provides a large viewing area; Matte white viewing surface diffuses projected light uniformly Ideal for indoor use, such as home, meeting room, classroom, restaurant & bar and more; Viewing Area Size (LxW): 87" x 49" (221 x 124.5 cm); Gain: 1.3; Suitable for front projection