The EXT DRIVE T8 lamps by RemPhos Technologies offer an economical and efficient alternative to upgrade to long lasting LED lighting, while retaining the original fixture. The EXT DRIVE T8 series replaces fluorescent 24in, 36in, and 48in T8/T12 lamps. Light is emitted 180 degrees so that the original fixture will be illuminated perfectly and uniformly. Extremely efficient at 110LPW, the EXT DRIVE T8 can be used as a safe retrofit for fluorescent lamps.EXT DRIVE T8 lamps are powered by high efficiency external drivers available in either non-dimmable or 0-10V dimming. UL Listed. Multiple lumen output and CCTs are available.