Bulbrite FC12T5 835 40-Watt Circline Fluorescent T5 Bulb, 800 Series, 3500-Kelvin, 2GX13 base, 12-Inch Diameter - 2 Pack;

Bulbrite Energy Wiser Circline fluorescent bulbs utilize high performance tri-phosphor used in T5 lamps for maximum brightness and color rendering, making them the ideal solution for ceiling fixtures, commercial and industrial applications.