The Major Brand G36T5L Ultraviolet Germicidal lamp is a slim line, double ended, germicidal tube lamp. It has an ultraviolet output of 13.8 watts and a life of 10,000 hours.Please Note: This light bulb emits Ultraviolet radiation. Avoid exposure. Ultraviolet radiation is harmful to the skin and the eyes and can cause serious skin burns and eye injury either from direct or reflected radiation. To reduce the risk of personal injury, install only in a fixture which provides adequate protection to area occupants. This bulb should not be used for illumination purposes. Features ozone free design.