Da-Lite Model C Series Projection Screen - Wall or Ceiling Mounted Manual Screen for Large Rooms - 113in ScreenThe Da Lite Model C Series Projection Screen is engineered for large rooms that demand a reliable, high performance manual screen. Designed for walls or ceilings, this robust screen combines a smooth, quiet operation with a durable, long lasting mechanical system. Permanently lubricated steel ball bearings, nylon bushings, and a heavy duty spring assembly work together to deliver effortless, consistent lowering and raising even in demanding