Features: [Screen material 1:1 gain] With standard black backing - Material is a high quality multilayer matte white with a black backing to avoid light penetration for a clear image, and the screen is cleanable with mild soap and water. [Large Screen Size] 120" diagonal (84" x 84") at a 1:1 format. This screen is universally suitable for most LED, LCD or DLP projectors on the market. [Light Up Your Life] Durable metal casing for dual wall and ceiling installation, perfect for classroom, home or business use. [Auto lock] This manual operation screen features a built-in self lock mechanism, simply pull the screen and it will stay put. [Wide-Angle] Crisp viewing angles up to 160 degress with a matte white surface diffusing light in all directions. [Easy to Setup] This projector screen is easy to mount and maintain, featuring a lightweight case and an anti-fabric, anti-static screen. [Easy to Clean] The anti-dust anti-acid treated fabric is made to last and easy to clean, simply use a cloth and some water to maintain! Specifications: Screen Material: matte white Overall Size: 89.7 x 86.6 inches (L x W) 7.2 x 7.5 Feet View Size: 84 x 84 inches (H x W) 6.98 x 6.98 Feet Diagonal: 119 inches 9.9 Feet Aspect Ratio: 1:1 Black backing: 1.38 inches Viewing Angle: 160 degree Material: Fabric, Metal- No assembly required In the title 120" 1:1 It's a diagonal dimension