Smaller, lighter and faster the team at Heater Craft has done it again. We have redesigned our industry leading marine heater and increased air flow by 8%, 3% lighter, and 5% smaller. The 40,000 BTU/hr three vent heater is easily vented to bow and rear seating areas while the third can be ducted to the drivers seat. Our heaters are perfect for a late night boat ride, warming up after a swim or simply extending your season on the water. When it comes to heaters no one does it better.