GE's Cool White U6 T8 LED tubes fit in existing 22.5-inch U-Bend fluorescent fixtures with electronic ballasts. It’s slim size fits in the same fixtures as traditional 22-inch U-Bend T8--1-inch diameter--fluorescent bulbs. Why make the switch to LED? GE's LED tubes are rated to last 50,000 hours. They provide long 22-year life based on six hours use per day, so you’ll replace less often. They use only 13-Watt of electricity helping you save money on energy. And, they’re mercury free. Use Cool White T8 LED tubes in basements, garages and commercial applications like warehouses and industrial buildings to provide cool, neutral white light.