Lithonia Lighting® GTL series is a specifiable, general-purpose recessed LED troffer that offers flexibility for budget-constrained spaces. Housing formed from 22-gauge cold-rolled steel. Smooth hemmed sides and smooth inward formed end flanges for safe handling. Lighter-weight fixture allows for safe, easy installation. It has eldoLED dims to 1 % driver. Long-life LEDs, coupled with high-efficiency drivers, provide extended service life. 90% LED lumen maintenance at 60000 hours. It is economical, solid-state lighting is ideal for new construction, renovation and retrofit opportunities. It is ideal for the broad range of applications where general-purpose fluorescent lighting currently prevails including offices, schools and commercial general-ambient applications.