The Auto-lock Manual Projection Screen PSBC100 is perfect for education, commercial presentations or residential home cinema. This auto-locking system with dual wall and ceiling installation design provides variable height settings in any position. The screen lanyard for easy operation included – allows screen\"s pull down handle to be reached from high areas. Black backed screen material eliminates light penetration for superior color reproduction. Standard 4-side black masking borders. Fibreglass matte white screen material with 1.2 gain and 120°viewing angle is durable and easy to clean. Optional grey matte white fabric (0.8 gain,160°viewing angle). The projection area of this 100\"\" screen is: 2.00x1.50m. FEATURES ●Interval Auto-Lock Mechanism: provides various height settings and ensures smooth screen retraction ●Screen Lanyard: allows easy pull down ●Black-Backed Screen Material: eliminates light penetration for superior color reproduction ●Wall/Ceiling End Cap Design: allows for multiple configurations and versatility in installation and setup ●4-side black Masking Borders: enhance picture contrast ●Cleanable Screen Material: for easy maintenance PECIFICATION Product Category: Manual Auto-lock Projection Screen Rank: Standard Screen Material: Fiberglass Matte White Fabric Maintenance: Cleanable Viewing Size(WxH): 2x1.5m Top Border(B1): 6 cm (2.4\' ) Bottom Border(B2): 4 cm (1.6\' ) Side Border(B3): 3 cm (1.2\' ) Diagonal: 100\' Ratio: 4:3 Viewing Angle: 160° Gain: 1.0 Case Dimensions: 218.4 cm Case Material: Steel Case Shape: Arc-Shaped Installation: Wall Mounted,Ceiling Mounted Certification: RoHS