Camco's T8 12VDC LED Bulb produces 700 lumens of bright white light with a color temperature of 4000K-4500K while only using 11.2 watts of energy. Save energy and stop wasting time changing light bulbs as these LEDs are designed for up to 60,000 hours of use. The T8-Fluorescent base is designed to replace an 18 inch fluorescent bulb. LED bulbs provide immediate bright light with no delay like fluorescent tubes. The Fresnel lens helps diffuse light. You will no longer have to replace ballasts or have the constant humming noise you get with fluorescent tubes. LEDs are much safer than fluorescent bulbs because they contain no mercury.