The seller is jojolighting and is located in Las Vegas, Nevada. E39 nickel plated mogle base. (6) mh1000/u/gdx/bt56 denkyu 10370 mh1000w green metal halide bulb m47/e bulb ansi code m47/e (e=enclosed fixture required) quantity case of 6 description. Matching ballast ANSI is M47/E The ANSI code on the lamp must match the code on the ballast.