The latest round of the Department of Energy (DOE) energy standards for General Service Fluorescent Lamp Standard (GSFL) took effect on July 14, 2014, impacting the production of the 700 series T8 fluorescent lamps. These inefficient 700 series T8 lamps cannot be manufactured due to not meeting the efficacy standards. Fortunately the development team at Philips came up with an improved design for the 700 series lamps (designated with “HL” or high lumens in the ordering code)