The AV Stumpfl monoblox64 middle strut 16:9 is a structural frame component for the monoblox64 system. It is designed for 16:9 configurations measuring 325 × 192 cm, corresponding to 10 ft 8 in × 6 ft 3 in. The component has a gross and net weight of 4.6 kg. It is supplied as an individual piece and is identified by manufacturer article number BXV-XC325/MST.