Sun System? LEC? brand 315 Commercial Fixture utilizes cutting-edge Light Emitting Ceramic? brand technology. State-of-the-art 95% reflective German aluminum interior offers unparalleled output, reflectivity and diffusion. Includes Philips highly efficient agriculturally engineered CDM-T 315 Watt LEC? brand lamp. This lamp creates amazing full color light spectrum out of next-generation ceramic lamps. Higher amounts of beneficial UV and far red spectrums increase the lamp?s growth power to the plants. Very high 1.95 PPF per second light source (3100ø K lamp). 3100ø K or 4200ø K color temperature, high 92 CRI, 33,000 initial lumens (105Lm/W). Long life 20,000 hr lamp. High 90% lumen maintenance @ 8,000 hr. High 85% PPF maintenance @ 20,000 hr. Unique open-rated lamp construction reduces radiant heat from the arc tube and is suitable for open fixture use. The LEC? brand 315 commercial fixture has a Philips 50/60 Hz low frequency, square wave, highly efficient electronic ballast rated for 50,000 hr ballast life. Compact commercial design to minimize greenhouse sunlight blockage. Power cord/plug configuration varies by fixture voltage. Detachable unistrut mounting hangers or traditional V-hangers. One year warranty on lamp. US Patent: D762,320 and Chinese Patent: ZL2015303159528.