STI's 6 in. Smoke and Acoustical Pathway 3-Gang Kit features a non-halogenated V-0 ABS/PC co-polymer shell and low-smoke silicone seal designed to help maintain pathway performance as cables are added, removed, or reorganized. The pathway is re-enterable and supports convenient moves, adds, and changes without replacing the assembly. It can be installed horizontally or vertically and accommodates wall and floor thicknesses from 4 in. to 8 in. With an STC rating of 50 under specified construction conditions and UL 2043 plenum testing, this pathway provides a practical cable-management solution for commercial, industrial, and technology-focused installations.