The (24 FT) 3-1/2 ID X 1 Wall Semi-Slit Black Poly Pipe Insulation Tube by Jones Stephens Corp is designed for effective thermal insulation in plumbing and HVAC applications. This insulation tube features a 3-1/2 inch inner diameter and a 1 inch wall thickness, providing excellent thermal resistance. Made from high-quality polyethylene, it is durable and resistant to moisture and chemicals. The semi-slit design allows for easy installation over existing pipes, making it a practical choice for both residential and commercial projects.