The AV Stumpfl VarioLock64 extension bar is an 80 cm frame or system component designed for use with the VarioLock64 system. It is supplied as a single piece and has a net weight of 1.04 kg. The manufacturer assigns article number BVL-X080 to this component. Manufactured by AV Stumpfl in Austria, it is intended to extend or adapt the VarioLock64 framing system.