The 4 or 6 inch (100-150mm) Tubular Series Light Pipe is a fully sealed, outdoor, waterproof system that is suitable for wet location use. The highly visible light guide provides continuous high luminance and uniformity in lengths up to 32' or 44' (810mm or 1.1m) with a single luminaire. A choice of standard emitting apertures allows the freedom to match the product to the scale and performance requirements of the application. Light guides are illuminated using conventional 70/150W (TBR4) or 250/400W (TBR6) metal halide HID lamps. Luminaires are available in a variety of standard configurations to ensure ease of access and the best system performance. Conveniently located luminaires with long life lamps make the system simple to maintain. All light guides are factory sealed and contain no gases or electrical components. The luminaires are quickly attached to the light guide and only require basic wiring. Simple two-piece mounting brackets make overall system installation easy and fast.