Fixture Prch Wlmt Fluo 1Lt 13W High impact, weather resistant housing and globe. Electronic circuit design for sub-zero degree starts. Automatic light sensor, night time ON, daytime OFF. Over 100 watts of light output. More energy efficient and lasts up to five times longer than compar able incandescent lighting. For patio or entrance lighting, outdoor use only. 13 watt fluorescent bulb included. Replacement bulb is 13W CFL GU-24 base.