This is a vertical ceramic metal halide system. It will run one 315w bulb vertically, and can be run at either 120 or 240v.

CMH grow lights are hands down the best HID grow lamp technology available on the market right now.

Also known as LEC grow lights, they have the best PAR spectrum of any HID lamp, the slowest degradation rate, and they’re also at least 10% more efficient than other HID lamps.