Fixture LED Recessed Troffer 2x4 3500K The Acuity Contractor Select GTL troffer is the contractors choice for LED rennovations. Ideal for on-for-one fluorescent replacement. 5000 lumens, #12 acrylic lens. 90% lumen maintenance at 60,000 hours. 0-10V dimming. The Lithonia 2x4 LED Troffer 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. This fixture cannot be dimmed and the fixture has a 5 year manufactures warranty.