Floor Lamp Electric Patio Heater Sumatra. The Sumatra floor lamp style electric patio heater. It is 68 inches tall. It has a cast aluminum construction. This beautiful electric heater can heat up to 12 feet diameter. It is perfect for cool evenings. This heater has a 1,200 W halogen bulb which is equivalent to approx. 4,095 BTUs of heat. It has 8 Ft. cord that uses a standard 120V grounded outlet. It has an automatic shutoff tilt switch. It is made with weather resistant hardware. It requires simple assembly.