The FB218 05 25 Silver Double Ply Black Poly R-8.0 from Mueller Streamline is designed for superior insulation performance. This product features a double ply construction, ensuring enhanced durability and thermal efficiency. With a thickness rating of R-8.0, it effectively minimizes heat loss, making it ideal for HVAC applications. The black poly finish provides additional protection against environmental factors. Measuring 5 inches in diameter, this insulation is compatible with various piping systems, ensuring a snug fit. It meets industry standards for insulation materials, making it a reliable choice for both residential and commercial projects.