The AV Stumpfl VarioLock64 middle strut is a 60 cm frame-system component for the VarioLock64 series. It is supplied in black and designed without studs or push buttons. The component is identified by manufacturer article number BVM-X/MST/X060 and has a weight of 0.83 kg. As a frame component rather than a screen or projection surface, it has no projection area or video signal interfaces.