Through technological advances and the highest grade components, these shatter- resistant Sylvania 21997 T8 fluorescent lamps can save up to 40 percent on energy costs with no loss of light. These lamps provide long lasting shatter resistance throughout its 30,000 life hours. These T8 lamps operate at 32 watts with a 3000K warm white color temperature. The P.E.T. 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. Case contains 30 lamps.