400W New Design HPS/MH Electronic Ballast With Fan Multi-Voltage:AC100-265V Dimming 3 phase ... %,100% CE,FCC,UL,CUL 400W New Design HPS/MH Electronic Ballast With Fanhorticulture; hydroponic; ballast; electronic ballast Unique design of circle housingUnique ... , MH150W, MH250W, MH400W, MH600W, MH1000W,MH200W-AC110V (WARM BOOT) 400W New Design HPS/MH Electronic Ballast With Fan