7.5' Borderlight Borderlight The 520 borderlight is a multi-lamp, compartmented striplighting luminaires designed for use as a general wash of light. Available wired for either three or four circuit operation for color separation or blending. The 520 borderlight is manufactured in standard portable lengths of 6 feet, four circuit; 6 feet 9 inch, 3 circuit; 7 feet, 6 inch, four circuit; and 8 feet, three circuit. It is also available in custom lengths and custom circuitry with sockets on 4.5 inch centers. The 520 can be used as toning or fill lights or for cyclorama lighting from both top and bottom.