This 1-3/8" ID x 3/4" Wall Self Seal Pipe Insulation is perfect for improving energy efficiency in HVAC systems. Featuring a self-sealing design, it allows for quick and easy installation around pipes. The insulation material provides excellent thermal resistance, helping to reduce energy costs and prevent condensation. Each carton contains 16 pieces, making it suitable for larger projects. This product complies with industry standards for insulation, ensuring safety and effectiveness in your applications.