Krest Duo is a symmetric mud-in slot lighting system designed to create depth and dimension through dual opposing lines of indirect light. Ideal for wall or ceiling applications, it forms a clean architectural channel that enhances space with balanced illumination on both sides. As part of the Krest system, Duo is specified as a complete solution—eliminating complexity in configuration, improving installation efficiency, and delivering repeatable, high-quality results. It utilizes Luminii’s LineLED technology, offering a range of outputs and color temperatures with smooth, uniform, dot-free light.