The 1-5/8" ID x 1/2" Wall Self Seal Pipe Insulation by Braxton Harris is engineered to improve energy efficiency in heating and cooling systems. This insulation features a convenient self-sealing design, allowing for quick and easy installation around pipes. With an inner diameter of 1-5/8", it fits standard pipe sizes, while the 1/2" wall thickness provides excellent thermal resistance. Each carton includes 20 pieces, making it suitable for both residential and commercial applications. This product complies with industry standards for insulation effectiveness and safety.