Sylvania Volumetric Troffer, 42 Watts, 120-177V, 0-10V Dimmable, 80+ CRI, 4000K, 2x4, white finish, with emergency backup 

The Sylvania 74444 Volumetric Troffer offered in 4000K is environmentally preferable LED alternatives to traditional fluorescent luminaires, offering up to 58% in energy savings. They are offered in two sizes and are ideal for illuminating offices, retail and hospitality areas. The volumetric design minimizes glare with a lens that extends into the frame, preventing light leaks. The driver is 0-10V dimmable (down to 10%).