The Xtrasun 600-watt magnetic high pressure sodium ballast features excellent grow light reliability and performance at a great price. It is compatible with most fixtures, and contains aluminum fins, louvers, and ports for extra cooling efficiency. A heavy duty handle makes it easy to carry the ballast or hang it on a wall, while rubber feet reduce noise and vibration. An 8-foot 120-volt power cord is included. The convection cooling on this ballast is so solid that it is backed by a five-year warranty, the longest in its class. Add this Xtrasun ballast to your indoor garden and reap the rewards without breaking your budget! 240-volt power cord sold separately.