Catalina 1000 watt 120/240 Volt metal halide ballast for horizontal or vertical lighting systems kit. Does not include lamp or reflector. Only top quality components are used in the manufacturing of the ballast. The heat-sync case/ housing that holds the components is made from extruded aluminum. These heat sync fins help to transfer the heat from the transformer to the air without the need for air vents or fans. Electrical components work better when they run cool. Comes with asix foot heavy-duty power cord. Fits most standard brands ofhoods and reflectors. Has special rubber insulating feet. The handle can be used for hanging The ballast has a switch for hps and hid. also there is a plug for 120v or 220v