Sunlite 05815-SU FC40T5/SP830 40W Fluorescent T5 Circline Bulb, 2GX13, Warm White

The fluorescent 40 watt 3,000k warm white t5 circline features a 2gx13 base, provides a light output of 3,350 lumens at a color rendering index (cri) of 82 and can last an average of 10,000 hours.