The AV Stumpfl VarioLock64 middle strut is a frame or system component for the VarioLock64 series. It has a length of 90 cm and is supplied without studs or press buttons. The strut is intended for use within the VarioLock64 framing system. It has a gross and net weight of 1.04 kg. Manufacturer article number BVL-X/MST/X090. No projection surface, projection area, video input, video output, connector, or lens data is specified.