BRAND NEW E-VISION ELECTRONIC METAL HALIDE BALLAST 100W C90/M90 OR M140 OR C191 120-277V 50/60HZ. This ballast is manufactured by Philips Advance. It is a HID Ballast, Electronic Ballast Type within the e-Vision Ballast Family. The lamp used for this is 100 watts with the ANSI Code of M90/M140. This makes ceramic metal halide operated by e-Vision ballasts the premier choice for many applications previously illuminated by either tungsten halogen or incandescent sources, such as retail lighting.