The AV Stumpfl MonoClip64 middle strut is a frame or system component for MonoClip projection screen systems with a 21:9 aspect ratio. It is specified for screen sizes of 569 × 252 cm, equivalent to 18 ft 8 in × 8 ft 3 in. The component is supplied as one piece and has a gross and net weight of 1.1 kg. It is not a projection surface or screen and therefore has no projection area, gain, or projection type.