The AV Stumpfl VarioLock64 extension bar is a frame or system component for the VarioLock64 system. It provides a 20 cm extension and is identified by manufacturer article number BVL-X020. The product is supplied as one piece. It is not a projection screen or surface and therefore has no projection area or projection-related specifications. Its net weight is 0.44 kg, and the country of origin is Austria.