4 Feet Linear LED flush to ceiling light. 50 Watts, 7000 Lumens, Dimmable, Choice of 3,500 Kelvin (Soft Light) or 4000 Kelvin (Bright Light), 50,000 Hours Bulb Life, 51 5/8″ long, 4 5/8″ Wide, 5″ High. Mount to ceiling 47″ on center. Integrated Light Emitting Diode, driver and built-in power supply. Power supply is mounted in the light box, 120-277 Volt Driver.