Get up to 5,000 BTUs of safe, dry, vented heat. Highly corrosion-resistant stainless and brass construction ensures years of service in the marine environment. Built for use on the move, the heater is unaffected by motion and is built with safety in mind. The burner features a thermocouple that provides instant shut-off if the flame is extinguished. An oxygen-depletion device shuts off both the flame and the gas flow if the oxygen level in the cabin ever drops too low. Requires 1" flue (sold separately), and deck cap (included). Fuel connection designed for 3/8" propane hose with female flare fitting. Fuel: Low-pressure propane BTU: 5,000 BTUs maximum Material: Brass, stainless steel and cast iron Features: Automatically shuts down if oxygen drops below 95% of normal Draw: No electrical components Duct Size: 1" flue pipe Dimensions: 16"H x 8"W x 7 1/4"D; Cooktop: 4" x 5" Warranty: One year