... above 8000hours 2.water-proof and heating resistant 3.far infrared heating infrared quartz element Quartz tubes TypeVoltagePowerLengthODHeating wireXD-Q10220V-240V300W-450W300 ... .CE.CB, RoHs approved8.Widely used in infrared heater,cooking,oven,stove,baker,painting dryer,drying apparatus,dyeing,print,printer,copy machine,projector ...