Bluex Bulbs 3 Pack MP100/U/MED 100 Watt Metal Halide ED17 Bulb is the perfect choice for outdoor lighting and commercial interiors. Featuring a medium base (E26) for use in street lights, parking lot fixtures, and other commercial and industrial lighting applications, this protected pulse start bulb has a long 15,000 hour average lifespan. With an ANSI Code M90/O, this metal halide bulb is for use in M90/O ballast fixtures and puts out a bright 8500 lumens of light with a color temperature of 4000K. The clear glass bulb ensures a high intensity discharge for optimal lighting.