Mueller Industries Inc. unveiled its Streamline® line sets with DuraGuard™ PE tear-resistant insulation. This unique polyethylene insulation has a tough, tear-resistant outer layer that protects the line set and its insulation during rough job site handling and tight-space remodel/replacement projects. Available in 50-, 82-, and 164-foot lengths with ½-inch insulation, these line sets are UV resistant, mold-and-mildew resistant, and provide increased condensation control.