Features104 Lumens/W efficacy29700 Lumens meanUniversal burning position1.9 umol/sec PPFProvide outstanding growth light performance and substantial energy-saving when combined with an efficient ballastSuperior lumen/PPF maintenance of 90% at 8000 hr93% ballast efficiency can provide substantial energy-savingIncreased time between re-lamping cycles when compared to standard metal halide lamps