

The FB218 Insulated Flex Duct (Part Number: 13102418H) is designed for heating, air conditioning, and ventilation systems. With a size of 18" and R Value of 8.0, this duct features a silver jacket reinforced with fiberglass scrim, ensuring durability and thermal efficiency. It comes in 25-foot lengths for versatile installations. Installation can be done in under 30 minutes with common tools.