Tectum® DesignArt® Lines - High NRC Tegular CeilingsTransform interior spaces with a three dimensional visual by combining texture, routed patterns, and colors with sustainable, acoustical TECTUM DESIGNART Lines High NRC panels for ceilings and walls. Sound absorbing, high NRC panels enhance the function and comfort in high capacity spaces by reducing disruptive noise. TECTUM DESIGNART Lines High NRC panels are available in various colors and patterns.