From fishing to sailing and all I/O or inboard powered boats in between. This 28,000 BTU flush mount, grilled heater fits easily in stairwells, cabin interiors or cockpit areas. Kit includes 1-Heater unit with wire harness, 1-Flush mount grill 1 switch plate with rocker switch and indicator assembly (HIGH and LOW) and 2-6\' lengths of 16 gauge wire.