The Apollo 120″x120″ Electric Projection Screen comes with a 120″x 120″ viewing area. It features a self-locked system that provides variable height settings. It has a convenient dual wall and ceiling installation design. It is equipped with a high contrast 1.3 gain that lets you enjoy clear and vivid pictures. It has a Matte white viewing surface that diffuses projected light uniformly. It comes with standard 4 black masking borders to get a better image effect. It is built with black-backed screen material which prevents light penetration. It also has a washable surface which is easy to clean and safekeeping. It has a lightweight steel case with a reliable spring inside for simple installation. The Apollo 120″x120″ Electric Projection Screen offers stable quality at competitive prices. This projector screen is ideal for computer, video, slide, and overhead projection in the home, office, or classroom. The Apollo 120″x120″ Electric Projection Screen offers no warranty.