Detailed Product Description T4 electronic ballast features:Power:13W, 18W, 26W, 2x13W, 2x18W, 2x26W1.Quality electrical components, stable performance, flicker free, silent operation;2.Pre-heating start-up, promoting life efficiently;3. Low temperature rising, energy saving; Small size for strong adaptability4.Long life5.Full power output6.Small size and 31mm high