Stationary frame building wall in black anodized aluminium frame in the cross section of 65 mm width and 35 mm depth for a perfectly projection screen through its tread depth of 35 mm the influence of external light is reduced and increases the visibility of the projected light the struts of the frame system is assembled and screwed the attachment of the screen area is at the back of the frame by clamping rods and fastening clips the screen size is based on a film carrier with matte white