Drape Kit Valance Bar for AV Stumpfl Monoblox systems. This frame or system component has a length of 264 cm and is identified by manufacturer article number BDX-XV264. It is designed as a valance bar for the Monoblox product series. The item is not a projection screen or surface and therefore has no projection area, aspect ratio, projection type, or surface-gain specification. No video signal interfaces or video-processing functions are specified.