4 ft. 15-Watt T8 32W/ T12 40W Equivalent Cool White (4100K) G13 Hybrid Linear LED Tube Light Bulb (10-Pack)Convert your existing fluorescent fixture to LED technology with the Feit Electric 4 ft. T8 32 Watt or T12 40 Watt Fluorescent Replacement Hybrid Plug and Play Ballast Bypass LED Lamps, a common replacement item for fixtures using fluorescent bulbs. These non dimmable 4100K cool white lights produce a similar fluorescent light output (1850 Lumens) using only 15 Watt of electricity up to 53% less energy. Get instant on to full brightness, with