The AV Stumpfl monoblox64 middle strut is a mechanical frame component for assembling a 16:9 projection screen frame sized 386 x 226 cm. It is intended for use with the monoblox64 system and is supplied as one piece. The component has a net and gross weight of 4.6 kg and carries manufacturer article number BXV-XC386/MST. No electronic video functions, projection surface, signal connectors or input-to-output path are specified.