Philips UniversalFit LED Tubes replace T8 and T12 linear fluorescent bulbs and can be used with most electronic or magnetic ballasts. Tubes provide bright, energy efficient light in kitchens, laundry rooms, garages, and more with up to 40% energy savings (compared to F32T8 electronic instant start systems). These bulbs turn on instantly, contain no mercury, operate in cold temperatures, and have a long life span.16w LEDLasts 36,000 hours1800 lumens 4000K