The F314 12 25 HD Black Double Ply Black Poly R-4.2 by Mueller Streamline is engineered for optimal insulation and durability. With a heavy-duty double ply design, this product boasts an R-4.2 thermal resistance rating, making it suitable for various HVAC applications. Measuring 12 inches in diameter, it provides effective temperature control in both residential and commercial settings. The black poly finish enhances its resistance to environmental wear, ensuring longevity. This lightweight insulation is easy to install and complies with industry standards, making it a dependable choice for energy conservation.
