A high output 120/277VAC-150W (50/60Hz) Thru-Hull Light designed with utmost attention to thermal management (maintaining low operating temperature). Thermal cut-out switch will prevent overheating should the unit be left on while hull is out of the water when planing or during haul-out. Casing and bezel are made from 316 Stainless Steel. Also included is a top quality Osram Metal Halide lamp & ballast. Ballast housing is complete with weather-proof connectors and pre-formed cabling. For transom mounting only.