Bulb ED28 ANSI Code H39 Base Mogul Screw (E39) Wattage 175 Initial Lumens 7800 Color Temperature 3900 K Color Rendering Index (CRI) 50 Rated Life (MIN) 24000 hrs Product Code 26439 Description HR175DX39/CP UPC 043168264396 Primary Application Street Lighting; Motion-Sensing & Security