Sun System 1 LEC 315 watt 120-240 dimmable ballast. Used for 2 crops. Retails $329 Asking $100 obo. Nanolux OG Series 600 120-240 volt dimmable ballast. Strikes both MH and HOS bulbs. Retails $250 Asking $75. Also available lamps for each ballast. $100.