UL Listed features self-contained ballast and a smaller diffused specular aluminum reflector for optimal intensity and the option to air cool. High Pressure Sodium (HPS) Lamps have initial lumens between 120,000-140,000 lumens and deteriorate slower than metal hallide lamps. They are dominant in the red-yellow spectrum and possess minimal amounts of the blue-green spectrum. System Includes: -Reflector -Bulb -Ballast(in reflector) Warranty Information: -Six year for ballast -One year for bulb Reflector Dimensions: 6"H x 16"W x 20"L

