The Type 6861 new 24K is the largest single HMI Fresnel available in the world. Through the extensive testing process, tremendous care was placed on striking a balance between performance, or light output and light quality, and the physical challenges of dissipating the tremendous heat generated by a lamp of this size. Knowing that simplicity is often the key to reliability and longevity, the new 24K does not make use of fans or other exotic ways to cool the lamp. Instead, large black anodized sockets, measuring a dramatic 5 1/2" in diameter, combined with specifically engineered top and bottom ventilation provides more than adequate cooling. In addition to the advances in cooling, a new highly polished 11" reflector, producing over 95% reflectivity, was designed to work with the larger arc gap of the 24K Lamp. This new reflector, along with the 24 3/4" Borosilicate Fresnel lens combine to produce unparalleled output and a perfectly smooth field from spot to flood.