The extruded high-grade anodized brushed aluminum housing comes in 8.2ft (2.5m) standard length, available for customization nearly every 3" for 1-8ft and long runs 8ft+. GAMMA light source consists of one LED strip with two rows of LEDs. Diffuser is a snap-in acrylic material with matte finish, distributes light evenly without dotted spots. GAMMA can be used in a Recessed application.