The AV Stumpfl monoblox64 middle strut is a frame component for monoblox64 projection screen systems with a 16:10 aspect ratio. It is designed for screens measuring 691 × 439 cm, equivalent to 22 ft 8 in × 14 ft 5 in. The component is supplied as one piece and has a net weight of 5.4 kg. It is not a projection surface or standalone screen.