Metal Halide Light Bulbs are primarily used in area and security lighting where white light is most needed. Other applications include warehouse lighting, architectural lighting and some types of metal halides with a higher color rendering index are used in retail and display lighting. Manufacturers' have different types of brands by which these specialty metal halide bulbs are called such as MasterColor by Philips, Constant Color by GE Lighting, and Natural White by Venture Lighting. We have a complete line of metal halide lighting on sale here... and if you can't find what you are looking for just give us a call 1-800-237-9500!