Industrial luminaires—low bay and high bay lights—are designed to support a safe and productive work environment. While industrial lighting is challenged to meet the highest requirements in terms of performance and efficiency, the need for durability and reliability from an industrial lighting system often takes precedence over other design considerations due to the long running hours, relatively high wattages and tough operating conditions typically involved. As LED technology pushes the boundaries of efficiency in power conversion, optical delivery and spectral power distribution, building a lighting system that thrives in harsh environments continues to pose a challenge. Oftentimes, industrial luminaries need to handle the extreme conditions such as high humidity, corrosive atmospheres, dust, vibrations, temperature fluctuations, and dirty power. The benefits of LED lighting can only be reaped when LED lights are able to survive in these conditions.