Monoblox64 bottom frame bar manufactured by AV Stumpfl for use as a lower frame component in the Monoblox64 screen framing system. The bar is black and has a specified width of 691 cm (22 ft 8 in). It is supplied as an individual piece and is identified by manufacturer article number BXW-XN691/B. The product is a frame or system component, not a projection surface or complete screen. Its net weight is 9.0 kg, and its country of origin is Austria.