Precision Lighting's PH436T5L double ended, preheated germicidal lamp features an ozone free design. Operating at 20 watts, this T5 tube has a miniature bi-pin base and emits short-wave germocidal UV light. Measuring at 17 inches in length, the germicidal lamp has an impressive life rating of 10,000 hours. Use this germicidal lamp for purification and inspection applications. This bulb should not be used for illumination purposes.