Da-Lite's wide selection of tripod and wall 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. Model B is perfect for classroom and meeting room facilities. Its easy pull-down system locks at intervals to fit a variety of projection formats. Nylon bearings provide smooth quiet operation for the life of the screen. Case design allows for hanging from a ceiling or flush mounting to a wall.