The Luminous HE recessed ambient fixture features efficiencies greater than 90 percent and a refreshing look using frosted acrylic diffusers. The luminaires are offered as 2x2 inches, 2x4 inches or metric in 1, 2 and 3 lamp T5/T8 configurations. Side and center diffusers are regressed for a bold architectural detail. A unique center panel design allows for various shielding options, with simple access to lamps and ballast for easy maintenance. At 3-3/4 inches (95mm), the Luminous housing is shallow plenum, and a subtle air return option is also available. High efficiency and an all acrylic rectilinear design make Luminous HE an excellent choice for all commercial and institutional architectural applications.