Comm-Line is one of the most common conduit solutions for telecommunications and fiber-optic projects across the United States. It is available in IPS (Iron Pipe Size) in diameters from ¾ to 16 inches and DIPS (Ductile Iron Pipe Size) in diameters 4 inches and up. It can be installed in existing conduit or via plow, direct burial or HDD (horizontal directional drilling) installation methods. Comm-Line is typically identified by a solid orange or terracotta color.