Philips 40 W T9 1.125 in. D X 16 in. L Circline Fluorescent Bulb Cool White Circular 4100 K 1 pk

Philips 40-Watt 16 in. Cool white circline fluorescent light bulb (FC16T9/COOL WHITEPLUS) delivers 2,500 Lumens of light and lasts up to 4 years or 12,000 life hours. It mounts to fixtures that accept 4-pin bulbs.