Drape Kit Valance Bar for AV Stumpfl Monoblox systems, designed as a frame or system component for drape installation. The bar has a specified length of 630 cm (20 ft 8 in) and is manufactured by AV Stumpfl. It is identified by manufacturer article number BDX-XV630. The product is not a projection screen or surface and therefore has no projection area, aspect ratio, projection type, or surface gain specification.