Bulbrite FC12T9CW 32-Watt Circline Fluorescent T9 Bulb, 4100-Kelvin, G10q Base, 12-Inch Diameter 2100 lumens Long Life (10,000 hours) 12-Inch Diameter Energy Wiser Circline bulbs available in 6-Inch, 8-Inch, 9-Inch, 12-Inch, and 16-Inch Diameters TCLP and ROHS Compliant