Sun System? LEC? 315 Commercial utilizes cutting edge Light Emitting Ceramic? technology. State-of-the-art 95% reflective German aluminum interior offers unparalleled output,reflectivity and diffusion. Includes Philips highly efficient agriculturally engineered CDM 315/U/O 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 hour lamp. High 90% lumen maintenance @ 8000 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? 315 Commercial has a Philips 50/60 Hz low frequency, square wave, highly efficient electronic ballast rated for 50,000 hour ballast life. The compact commercial design to minimize greenhouse sunlight blockage. Power cord/plug configuration varies by fixture voltage. Detachable unistrut mounting hangers or traditional V-hangers. US Design Patent Pending No. 29/518,803.