The Twin Hornet models are the only dual component bilge heaters in the world. The heater contains two thermostats, heating modules and fans, all in one aircraft aluminum housing. This provides TWICE the protection.

2 thermostats
2 fans
2 heating modules
5" x 5.25" x 4.25" housing
120 volts

Twin Hornet 45 700W 120V HEATER