The Monoblox64 middle strut is a frame or system component for AV Stumpfl Monoblox64 projection systems with a 4:3 aspect ratio. It is designed for screen systems measuring 569 × 431 cm, equivalent to 18 ft 8 in × 14 ft 2 in. The component is supplied as one piece and has a net weight of 6 kg. No projection surface, video interfaces, connectors, or standalone dimensions are specified.