Insulated Flexible Air Duct 6\ X 25' R6 Flex Duct
- R6 insulated flexible duct 6 inches inner diameter by 25 feet long.
- Underwriters Laboratories UL 181 listed, and complies with NFPA Standards 90A and 90B..
- Core material will not support mold and mildew growth.
- Acoustically rated CPE core assures quiet performance..