This PLT F15T8 shatter-resistant linear fluorescent tube operates at 15 watts. It has a color temperature of 6500K, a CRI of 75, and an average life of 7,500 hours. It is protected by a shatter resistant P.E.T. coating. The PET coating around the tube has U.V. protection against yellowing, fading, and clouding. It is extremely strong, puncture resistant, and lightweight. These fluorescent lamps are perfect for any residential or commercial application.