The T34 FAHE high-efficiency LED panel features adjustable wattage output and selectable color temperature. This panel, measuring 2 feet by 4 feet, achieves efficacies of up to 148 lm/W, surpassing DLC Premium standards. It is designed for installation in recessed ceilings, but can also be directly mounted to drywall using one of the available surface mounting kits. The Rab Lighting T34FAHE-2X4/E features include a battery backup that will operate the fixture for 90 minutes if power fails and wired for 120-277V, 30W/23W/17W field adjustable light output, color temperature selectable by 3500K, 4000K, 5000K, and driver includes dimming control wiring for ???????0-10V dimming systems.