The AV Stumpfl VarioLock64 middle strut is a frame or system component for the VarioLock64 series. It has a length of 80 cm and is supplied without studs or snap buttons. The component is identified by manufacturer article number BVL-X/MST/X080 and has a gross and net weight of 0.91 kg. No projection surface, projection area, video inputs, or video outputs are specified.