VarioClip Lock extension bar for AV Stumpfl frame or system components. The bar has a specified length of 47 cm and is identified by manufacturer article number BCL-X047. It belongs to the VarioClip Lock product series and is supplied as an individual piece. The product is a structural accessory rather than a projection screen or surface; therefore, no projection area, aspect ratio, gain, projection type, or video input/output specifications apply.