RECESSED OPTION: 1 11/16" wide recessed aluminum slot; snap-in LED boards and cover; trimless version available powder coated white, trim version available in gray, white or black. Light leak-free gasket endcaps. Custom edges for gap-free true trimless installation in sheet rock ceilings 5/16" – 1". Also suitable for installation in grid or acoustic ceilings. CCEA Chicago Plenum rated option available. IC rated, damp rated. CEILING / PENDANT / WALL OPTION: 1 11/16" wide x 3" high fixture. Direct only or direct / indirect light distribution, 40% down / 60% up. High performance opal cover for uniform illumination and an optical efficiency of up to η=67%. High efficiency LEDs at 80% lumen maintenance (L 91) long life 50,000 hour. Color temperature consistency to a 3-step MacAdam ellipse in 30K, 35K or 40K, CRI &gt; 80. 120 / 277V input voltage with various dim options.