The AV Stumpfl monoclip64 middle strut is a black-anodized frame component for 21:9 screen frames measuring 569 × 252 cm. It is designed as a central support element within the monoclip64 frame system and is supplied as an individual component. The strut has a net weight of 4.46 kg and carries the manufacturer article number BMW-XU569/MST. No video signal interfaces or projection-surface specifications are stated.