Professional Portable Manual Pull Down Projector Screen Wall Ceiling Mounted 120" 4:3 High quality matte white surface provides 96"x72" viewing area with 4:3 aspect ratio Shelf-lock system allows you to adjust the height and aspect ratio Dual wall and ceiling installation design Black background screen material eliminates light penetration,Matte white viewing surface diffuses projected light uniformly Lightweight with Scratch Resistant Steel White Case;Screen surface could wipe with mild soap or water