Photo 1 of (2025 Updated) Boat Engine Compartment Heater with Self-Regulating PTC Element & Automatic Thermostat | Winter Freeze Protection for Boats, RVs, Greenhouses & Well Houses | 400W

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Photo 1 of (2025 Updated) Boat Engine Compartment Heater with Self-Regulating PTC Element & Automatic Thermostat | Winter Freeze Protection for Boats, RVs, Greenhouses & Well Houses | 400WPhoto 2 of (2025 Updated) Boat Engine Compartment Heater with Self-Regulating PTC Element & Automatic Thermostat | Winter Freeze Protection for Boats, RVs, Greenhouses & Well Houses | 400W