

The FB216 Insulated Flex Duct (Part Number: 13602404H) is a high-performance duct designed for heating, air conditioning, and ventilation systems. With a size of 4" and an impressive R Value of 6.0, this duct provides superior insulation, ensuring energy efficiency and cost savings. The silver jacket, reinforced with a fiberglass scrim, adds durability and longevity, capable of lasting for years without compromising performance. Compatible with various HVAC systems, this flex duct is a reliable choice for residential and commercial applications.