The Hatch MC39-1-F-UNNU Electronic Metal Halide Ballast is a high-quality lighting accessory designed for businesses and industrial facilities. Made by Hatch Lighting, this ballast operates at 39 watts with a metal halide bulb, providing reliable and efficient lighting. With the ability to run on both 120 and 277 volts, this ballast ensures a consistent and bright illumination output for any facility maintenance or safety needs.