U-shaped contacts enable solder-equivalent connections. Pair testing is easy with test entry ports on the front side of all modules. The exclusive 3M™ Cold Shrink™ Tubing with 3M's unique delivery system provides a tight seal and accommodates a wide range of cable, wire, conduit and hose diameters. Resins and other insulating and sealing compounds feature a high degree of mechanical strength and provide moisture resistance for above ground and buried applications. Communication duct is the ideal solution when cable or wires cannot be installed within the wall - one piece design provides easy installation and the ultra-strong foam-backed adhesive mounts quickly and evenly.