LEDi2 12-IDF-24-W Architectural Indirect Troffer 2'x4' LED Troffer Light Fixture(Including 3 of T8 4FT 18W 6000K- Clear Finish Tubes) Including 3 of T8 4FT 18W 6000K-Clear Tubes Power Output & Lumens: 11W, 1210 | 17W, 1870 | 20W, 2200 Color Accuracy (CRI): 75 Application: Office, School, Conference Room Life Time: 50,000 Hrs Warranty: 5 Year Limited