The TGLS is NICOR''s newest contractor grade troffer that offers optimized performance and quality for commercial spaces. It features a fully sealed chamber with a seamless aluminum frame to keep dust and bugs out with zero maintenance required. The integrated dual-voltage driver enables the troffer to be used with 120VAC or 277VAC systems and provides full-range dimming (0-10V) capabilities. The TGLS allows you to change between 3500K, 4000K and 5000K color temperatures with a simple switch on the junction box. The DLC Listed fixture is Damp-Location and IC rated, making it ideal for offices, hospitals and other commercial spaces. Optional kits for drywall framing or surface mounting, and emergency backup batteries are available; sold separately. Protected by NICOR''s 5-year limited warranty.