ETC S4WRD RetrofitETC S4WRD LED 3200 90CRI Bk Retrofit Kit; 7067A1201; Source 4WRD II Gallery (90+ CRI) Retrofit Kit; ETC Source 4WRD LED (Watt Reduction Device) is a replacement for a standard source four burner assembly, which converts the HPL light source into a white light LED; The easy and quick conversion is non destructive and takes less than a minute (in most cases it can even be done without changing the focus of the device); Source 4WRD LED can be dimmed