Spectromaster Dimerabile Digital Ballast 600W Spectromaster 600w Digital Ballast | Products \ Power Supplies Products \ Power Supplies | Maxgrowshop.com
Ballast HPS/MH ELT 600W - Easy Growshop
SG 600W HPS Ballast, 120/240v - Dambly's Garden Center
iPower 600W HPS MH Digital Dimmable Grow Light System Kit 19-Inch Gull Wing Reflector with Electronic Ballast, Two Bulbs, Timer and Hanger Rope