This is xtrasun convertible ballast means extra flexibility with your gardening. Use halide for growing, then once plants have started, switch to sodium bulbs for flowering. 5 Year warranty. 120/240-Voltage. Maximum amperage is 3.8 and maximum wattage is 400. This product weighs 28.9-pound. Measures 16-3/5-inch length by 10-4/5-inch width by 9-2/3-inch height.