... as per customer request Infrared Carbon Heater(1)Material: Carbon Fiber(2) Types: A. Transparent Carbon Heating element B. Frosted Carbon Heating element (3) ... 10000hrs(7) Shapes: Linear, U, Peach and many others(8) Features: Far infrared, long lifetime, energy saving---it is high ... produce 1.65 kilocalorie of heat., quick and even in generating heat , with the electric heat conversion rate over 99%( ...