The Kobi Electric K4R2 (P/N TR2-24-42-40-MV) 42W volumetric dual lens LED troffer has a rated voltage of 120-277V with a luminosity of 4950Lm and color temperature of 4000K. It has a life expectancy over 50,000 hrs and an operating temperature range of -4 F to 113 F (-20 C to 45 C). It is designed to replace recessed fluorescent T8 tube light fixtures. Can be used in damp locations. Note: This type of light is not for emergency or exit lights.