GAF 14" X 25' Insulated Flexble Duct with R6 Insulation, offering 33% More Insulation Than The Standard| Comes with UL181 Standard of Safety and is ETL Listed

Enhanced Thermal Performance: The Insulated Flexible Duct R6 Silver Jacket incorporates R6 insulation, providing 33% more insulation than standard R4.2 products for improved thermal efficiency and energy conservation. Adaptable HVAC Application: Suitable for standard heating and air conditioning systems, as well as various venting uses, ensuring flexibility and dependability in different environments. Robust Build: Encased in a heavy-duty silver jacket, this flexible duct is engineered for enduring durability, safeguarding the insulation and maintaining consistent operation. ETL Certification: Complying with the UL181 standard, this duct is ETL listed, confirming it meets high safety and quality requirements for HVAC system use. Energy Conservation: The enhanced insulation in this duct assists in lowering energy usage, contributing to a more efficient and economical HVAC system