The AV Stumpfl monoblox64 middle strut is a structural frame component for assembling a 16:9 monoblox64 projection system. It is specified for systems measuring 508 × 294 cm, corresponding to 16 ft 8 in × 9 ft 8 in. The component is supplied as an individual piece and has a net weight of 4.46 kg. It is not a projection surface or screen and therefore has no projection area or stated video signal connections.