The F206 04 05 Silver Sleeve is a no-core sleeve designed for optimal insulation performance with an R-value of 6.0. This product is perfect for applications requiring thermal efficiency, such as HVAC systems and piping insulation. Made from high-quality materials, the silver sleeve offers excellent durability and resistance to wear and tear. Its compact size of 4 inches ensures a snug fit, making installation straightforward and efficient. This sleeve is compliant with industry standards, ensuring safety and reliability in various environments. Ideal for both residential and commercial use, it enhances energy efficiency and reduces heat loss.