This 2-1/8" ID x 1" wall self-seal pipe insulation is designed to improve energy efficiency and prevent condensation. Each carton contains 9 pieces, making it ideal for large projects. The insulation is made from high-quality materials that provide excellent thermal resistance and durability. Its self-sealing feature allows for easy installation, ensuring a snug fit around pipes. This insulation is perfect for both residential and commercial applications, helping to reduce energy costs and protect against moisture damage.