Constructed of heavy duty black steel and similar to the NordicStove Basic, the NordicStove Convector is a convection heater available in model sizes: Convector 68 (6800 BTU), Convector 130 (13,000 BTU), Convector 250 (25,000 BTU), and Convector 400 (40,000 BTU). This unique heating versatility is ideal for a wide range of heating requirements. NordicStove heaters require no electricity. Ideal for heating your boat, cabin, or home. Heavy stovetop is perfect for cooking.