Xtrasun 1000W 120/240v HPS/MH Convertible Ballast
With the Xtrasun Convertible Ballast, you'll have Xtra flexibility; Use a metal halide for growing and be able to switch to a sodium for flowering. Convert from sodium to halide and back Dual voltage 120/240 Works with Hydrofarm reflectors and most others Aluminum fins for more cooling surface 5 year warranty on ballast electrical components CSA certified: click here for listing