HMI Par G HMI Ballasts HMI Flicker Free Ballasts 4 x 18k/12k 3 x 6k/12k 1 x 6k 4 x 4k/6k 6 x 2.5k/4k 2 x 2.5k 4 x 1.2k/2.5k 5 x 575w/1.2k 1 x 575watt 2 x 400 watt 1 x 200 watt