The monoblox64 middle strut is designed for use with an AV Stumpfl 21:9 frame measuring 691 × 303 cm. It is a frame or system component rather than a projection screen or surface and belongs to the monoblox64 product series. The individual strut is identified by manufacturer code BXV-XU691/MST and has a net and gross weight of 4.6 kg. No video signal interfaces or separate accessories are specified.