Instahibit 92inches Diagonal 16:9 Manual Pull Down Projection Screen Self-Locking 80" x 45" White Instahibit&trade; 92inches Diagonal 16:9 Manual Pull Down Projection Screen, 80" x 45" viewing area Self-locked system provides variable height settings, wall or ceiling installation design Matte white viewing surface diffuses projected light uniformly 4-side black masking borders increase picture focus & contrast,lightweight steel white case for easy installation Black-backed screen material eliminates light penetration,the screen material is durable and easy to clean.