Sun System? LEC? Brand 315 Watt Air-Cooled Fixture utilizes cutting edge Light Emitting Ceramic? brand technology. The patented sealed optic technology allows removal of heat generated by the lamp without cooling the lamp. This fixture features 8 in oval air-cooled fittings that accept standard 8 in flexible ducting. Fixture has a 95% reflective German aluminum textured insert for excellent output, uniformity and diffusion. Highly efficient agriculturally engineered CDM-T Elite 315 Agro Lamp (lamp included). Greatly improved full color light spectrum out of next generation ceramic lamps. Higher amounts of beneficial UV and far red spectrums increase the lamps growth power to the plants. Very high 1.95 PPF per second light source. 3100?K or 4200?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. 50/60 Hz low frequency, square wave, highly efficient. US Patents Pending: 14/701,134, 29/567,137, 14/662,706. Chinese Patent Pending: 201630437484.6. One year warranty on the lamp.