PerfectFlow? propane pressure control system. High pressure regulators provide constant output. WindBlock? System protects burners from wind. Aluminized steel cooktops. Heavy duty removable nickel chrome grates. Two 10,000 BTU burners. Boils quart of water in four minutes on high. One 16.4 oz. Cylinder of fuel lasts up to 1.1 hours with both burners on high and 4.5 hours on low. Durable textured steel case. NOTE: Can be operated from bulk cylinders with proper accessories (not included).