The AV Stumpfl VarioClip Lock extension bar is a black frame or system component for the VarioClip Lock product series. It provides a specified length of 57.5 cm and is supplied as one piece. The manufacturer article number is BCM-X057,5, and the net and gross weight are each 1.24 kg. This component is not a projection screen or surface; no projection area, aspect ratio, surface gain, additional dimensions, connectors, or accessories are specified.