The Mueller Streamline FB214 10 25 is a premium double ply black poly fitting with a thermal resistance rating of R-4.2. This product is designed for superior insulation in plumbing and HVAC applications, ensuring energy efficiency and reduced heat loss. With a robust construction, it measures 10 inches in diameter, making it suitable for large-scale installations. The double ply design enhances durability and performance, while the black poly material provides excellent resistance to environmental factors. This fitting complies with industry standards, making it a reliable choice for both residential and commercial use.
