Sunlights Budget Priced Sun System 10 Econogro remote grow ballast with Yoeldmaster4 or Yieldmaster6 reflector and choice of metal halide bulbs for vegetative growth or HPS bulbs for flowering and fruiting growth. 5-year rebuild or replacement warranty. Available with glass lens and air cool fittings. UL listed for use with HPS lamps. UL Listed for Metal halide lamps with a glass lens.