The OKT 2x2 LED Troffer Light Fixture reach up to 110 lumens per watt in 100-277V or 120-347V AC input option with included UL Recognized constant current driver. This 2x2 led troffer grid light fixture is available in 3000K, 3500K, 4000K, and 5000K color temperatures.It is dimmable which can compatible for most 0-10V Dimmers and also provided emergency backup and motion sensor function options. OKT's 2x2 led troffer fixture is a well-designed, lay-in ceiling troffer fixture for new construction applications or retrofit existing fluorescent panel light fixtures,widely used in office spaces,major retail stores, education, government, healthcare and hospitality.