... \Length:100mm-1500mm 4\Life-span:over 6000hours Infrared quartz heater:1.Versatility of heat source: 2.Safe: Quartz envelope,heat ... . 4.Long life: More than 6000 hours. Application: -Home heating: Heater,oven,stove,baker,toaster,flooring -Industrial heating: Automobile,equipment,machine