Bulbrite FB32/841/EW 32-Watt Fluorescent T8 Bulb U-Tube 6-Inch Leg Spacing, 800 Series, 4100-Kelvin, Medium Bi-Pin Base Can be used on both instant and rapid start ballasts Deliver up to 95-Percent lumen maintenance 2850 lumens Long Life (20,000 hours) TCLP and ROHS Compliant