100'' Electric Projector Screen Wall Ceiling Electric Motorized Drop Down HD Projection Projector Screen 4K Ultra HD and Active 3D Projection Ready. 100'' Motorized Projector Screen - Indoor and Outdoor Movies Screen 100'' inch Electric 4:3 Projector Screen W/Remote Control is the ULTIMATE projector screen This screen has a 4:3 aspect ratio (can be adjusted to 16:9) and black border that ensures that contrast is increased and no light is lost 4-side black masking borders increase picture focus & contrast Electric motor allows silent operation with extended operational longevity It's perfect for home theatre, classroom or conference room presentations office as well as public display.