Engineered for resilience and flexibility, the Smoothwall 4" SDR 13.5 conduit from Duraline is designed to provide long-lasting protection for cables, safeguarding them against environmental stresses such as shifting ground, rock interference, and root impingement. Its advanced construction from flexible HDPE allows for smooth bends without the need for specialized equipment, ensuring a hassle-free installation in various applications including plow, trench, directional bore, and direct burial. A standout feature of this conduit is the pre-installed Bull-Line™ Pull Tape with EVEN-LOAD™, which simplifies cable pulling by providing slack at access points, while also allowing for significant tensile strengths ranging from 500lb to 6,000lb. Furthermore, the co-extruded SILICORE® ULF option enhances internal friction reduction, facilitating easier cable movements and repairs. Available in various colors and with additional UV protectants for aerial uses, this conduit not only meets stringent compliance standards but also offers versatility for projects in diverse climates, including cold weather installations.