Ideal for the garage, workshop or basement, the Philips 22-Watt 8 in. T9 Cool White Circline Fluorescent Bulb (FC8T9/COOL WHITEPLUS) delivers 1,000-Lumens and lasts up to 4-years or 12,000 life-hours. It features a reduced mercury content and installs to fixtures that accept 4-pin base bulbs. Cool white light appearance preferable for many indoor applications.