This new LED Architectural troffer fixture adopts the latest in optical and LED technology for use in many commercial applications. It provides a single pleasant volumetric soft light that fills any interior space, giving it a larger, brighter, and more productive ambiance. Color temperature can be switch to 3500K neutral white, 4000K cool white and 5000K daylight. The input wattage can be adjustable to 3 different level that helps you to save energy cost. This fixture is DLC and UL certified. It is popular in office, warehouse, public area and other commercial area.