This digital 315 watt ceramic metal halide fixture delivers the highest efficiency and closest spectrum to actual sunlight in the commercial horticultural industry. Utilizes advanced low frequency square wave technology and a high efficiency 315 watt ceramic metal halide grow lamp. The Growers Choice Horticultural Lighting 315w SE CMH Complete Fixture comes with one 315w SE CMH lamp of your choice (4 options). Work with Gavita EL1 and/or EL2 controllers. 277v
