Topaz.s Linear 4000K, T8 ECO for fluorescent T8 fixtures is the perfect choice to replace traditional fluorescent lighting. These tubes offer energy savings of over 50%, along with a significantly extended lifespan of 50,000 hours. Tubes are UL Type A, ballast compatible and work with existing instant start systems, making replacement of 4-foot FO32 lamps as simple as plug and play. Our LED tubes feature frosted glass construction lens, 310. light emitting area and seamless end-to-end glare-free illumination. These tubes are rated for damp locations and suitable for use in enclosed fixtures.