Instahibit 72inches Diagonal 4:3 Manual Pull Down Projection Screen Matte 57" x 43" White Instahibit 72" diagonal, 4:3 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): 57" x 43" (144.8 x 109.2 cm); Gain: 1.3; Suitable for front projection