AV Stumpfl AT64-SHIFT extension for the left side, measuring 107 cm and specified for the 21–62 configuration. This component is part of the SHIFT product series and is intended as an extension accessory for compatible AV Stumpfl screen systems. Manufacturer article number: BFZ-FST/AT64S/1067L1. Weight is 1.7515 kg. No projection surface, video signal interface, or connector information is provided.