Xtrasun BAH100A 1000-Watt Halide 120/240-Volt MH Ballast Ballast features aluminum fins, louvers and ports for extra cooling efficiency The convection cooling on this ballast is so solid that all units include a five-year warranty Xtrasun ballast to your indoor garden and reap the rewards without breaking your budget This product weighs 32.4-pound Include a five-year warranty