Insulated Flex Duct is a flexible ducting solution wrapped with insulation and a silver metalized jacket for superior performance in HVAC applications. Ideal for long run installations, it meets local building codes and features a flexible steel wire helix for added strength and flexibility. The polyester film with an approved bonding agent ensures durability, and the thermal certification meets the ADC standard. With a compression ratio of 25ft. (7.6m) to 30" (76cm), this insulated flex duct offers no installation length limitations, making it perfect for versatile heating, ventilation, and air conditioning systems.