The 30' 4-1/8" ID x 1/2" Wall Semi-Slit Pipe Insulation from Braxton Harris is designed to enhance energy efficiency and prevent heat loss in plumbing systems. This insulation features a semi-slit design for easy installation over existing pipes, providing a snug fit that minimizes thermal bridging. The durable material is resistant to moisture and corrosion, ensuring long-lasting performance. Ideal for both residential and commercial applications, this insulation meets industry standards for safety and effectiveness, making it a reliable choice for improving energy efficiency in your plumbing projects.