The Sylvania 20683 Compact CF 18DD/E/827 DULUX D/E Fluorescent is an energy-efficient light bulb that is designed to provide bright and long-lasting illumination. With its 18-watt compact fluorescent technology, this bulb offers a stylish and efficient lighting solution for various applications in the home or office. The 4 pin connector makes it easy to install and the tube shape provides a wide range of light output. With the trusted Sylvania brand, you can be sure of the quality and reliability of this product.