Fantech FIDT 4 INSULATED FLEX DUCT

FIDT 4 Insulated Flex Duct. 4" flexible duct, R4.2 Rating, 25ft. Item no: 411061. FIDT are insulated flexible ducts for indoor use in residential and commercial HVAC systems with low-to-medium operating pressure. Ducts are manufactured with a tri-directional fiberglass scrim reinforced, metallized polyester outer jacket. R4.2 value. Available in 25 ft length. UL 181 certified. Flexible round insulated duct. The insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is UL181 Listed. Available in 25-foot lengths.