Sun System LEC 630 Light Fixtures feature a dual horizontal lamp configuration offering increased wattage when compared to a single fixture design. Designed with 98% reflective German aluminum for excellent output, diffusion and uniformity. This product is next generation of ceramic lamps. Improved light spectrum output means beneficial UV and far red spectrums increase the lamps growth power. High 1.95 PPF (photosynthetic photon flux) per second light source. Finally, this product features open rated lamp construction to reduce radiant heat from the arc tube.