These ELSCO Eco-Panels are a well-designed, in ceiling troffer fixture widely used in offices, hospitals, and other professional locales. These Flat Panels have an outstanding luminous efficacy of 901m/W achieved by utilizing ultra-bright SMD LEOs in tandem with Japanese design reflective materials. Thanks to its good heat sink design, these Flat Panels have an unbelievable low In-situ temperature 33 °C. Calculated L70 lifetime is 94,000h.