Double Life Bulb/Heating Element (500 Watt) for EdenPURE GEN4 & USA1000 Infrared Heaters Brand New and Never Used DOUBLE LIFE Bulb/Heating Element New Improved and Lab Tested for Double Life Expectancy of 15000-20000 Hours than the original bulb (8000-10000 hours) for EdenPURE GEN4 & USA1000 Infrared Heaters and MORE!