Open box The 4-foot long LED troffer from Lithonia Lighting delivers general ambient lighting in applications such as schools, offices and hospitals. Long-life leds, coupled with energy efficient drivers, provide Extended service life. Low maintenance and easy to install, this troffer Works well in applications where LED is desired and budget-consciousness is needed. 80% LED lumen maintenance at 60,000 hours. Output 5,000 lumens with 4,000K cool White color temperature. Csa certified to U.S. And Canadian standards. Damp listed.