DULUX® L SuperSaver® lamps offer energy-saving, highly efficient options over 40 W twin-tube T5 compact fluorescent lamps. These lamps are an energy-saving replacement for the standard lamp. With a relative lumen output of 95% and energy-saving of up to 10%, the 28 W DULUX® L SuperSaver® lamp is the right replacement when similar light levels are important and energy-saving is needed. When maximizing savings is most important and a reduction in light levels is acceptable, the 25 W DULUX® L SuperSaver® yields up to 25% energy-saving and 79% relative light output. Both options deliver significant energy-saving with a simple lamp change-out. For optimal performance consider pairing these lamps with Quicktronic® high efficiency ballasts. When DULUX® L SuperSaver® lamps are installed on Quicktronic® ballasts, the system is covered by the QUICK 60® warranty the industry's first and most comprehensive lamp and ballast warranty.