Da-Lite Manual Wall and Ceiling Screens Da-Lite's wide selection of manual wall and ceiling screens gives the presenter a professional solution for any projection application or situation. All screens incorporate Da-Lite's exclusive Camlok roller system that prevents the screen from being accidentally pulled from the roller. All screens come with black masking borders as standard. Advantage Manual with CSR Floor Model C Model C with CSR Model C Model B with CSR Model B Deluxe Model B - Tensioned Class Mate