... install 3.The light is downy electronic ballast for fluorescent advertising light-boxSpecifications1) T4/T5/T8 electronic ballast 2) good quality without noise 3 ... 2*36w,1*58w,2*58w,2*60wReal wattage: 85%Cover: PC fireproof houseSuitable for T8 or T4 tubeGuarantee: 1 yearPacking ... factory specializing in T8/T5/PLL electronic ballast from 8w-58w,with a lamp,two lamps,three lamps and four lamps.(We also ...