The Saker Tab-Tension Series Includes A Tab-Tension System To Maintain Flatness All Across The Projector Screen. Standard Features Include A Wireless 5-12 Volt Trigger Ir/Rf Remote Control Package And A Detachable Manual Keypad Switch.Screen Material• Maxwhite Fiberglass (1.1 Gain) Matte White Fiberglass-Backed Material• Wide Viewing Angle And Uniformly Diffuses Light In All Directions• Active 3D 4K Ultra Hd And Hdr Ready• Not Compatible With Ultra/Short-Throw Projectors• Standard Black Masking Borders And Black Screen Backing Design And Installation • Flush Hidden Wall Mounts Allow Screen To Slide Horizontally For Proper Centering• Tab-Tension Design Helps Maintain A Flat Projection Surface• Curved Aluminum Enamel White Case With Parallel Grooves• Extra Top Black Masking Border For High Ceiling Installations• Plug & Play Ready No Hardwire Installation Required• Mounting Hardware Kit Included For Wall Or Ceiling Installation Control System • Internal Radio Frequency/Infrared Receivers With Ir Rf Remotes Included• Detachable 3-Way Wall Switch Keypad For Up/Stop/Down Manual Operation• Wireless 5-12 Volt Trigger Included• Rj45 Port Allows 3Rd Party Control System IntegrationFeaturesScreen TypeElectric Diagonal Screen Size (Inch)135 Viewing Area (Wxh) Cm291 X 182 Format16:10