One of the most common lighting fixtures to illuminate large building is the 4ft tube lights. 4FT LED Tube Light Fixture are the best choice for any building area where you need optimal brightness at cost-effective prices. The LED tubes are available in large varieties of color temperatures and have an operational lifespan of more than 50,000 hours. Unfortunately, the fluorescent tubes age significantly when the lights are continuously switched on and off. With LEDs, there is no issue with aging and high power consumption.