Maxlite - HighMax High Output. High lumen output, energy efficient compact U tube bulbs. Excellent for High and Low Bays, Gymnasiums, wall packs, warehouses, churches, stores, grow lights, and shops. Self ballasted, 120 volt, 277 volt and 347 volt, 40 watt, 60 watt, 80 watt, 100 watt, 150 watt, and 200 watt. Color temperatures, 2700K and 5000K.