Ballast Tp702a lifetime(hrs):10000 dimension(mm)l*d*h: 112*45*40 1*20w, 1*30w, 1*40w 2*20w, 2*30w, 2*40w Watt(w) Voltage (v) frequency (hz) power factor (p.F.) n.W./g.W. (kg) carton-box 100pcs(cm) 1*20w 110/220 50/60 0.65 12/14 53*30*23 1*30w 110-220 50/60 0.65 13/15 1*40w 110/220 50/60 0.65 14/16 2*20w 110/220 50/60 0.65 14/16 2*30w 110/220 50/60 0.65 15/16 2*40w 110/220 50/60 0.65 16/18 Carton