H&C Flex™ offers flexible duct products for both residential and commercial applications that provide the most economical solution to your air-handling needs. H&C Flex™ uses formaldehyde-free, bio-based, environmentally friendly insulation for improved indoor air quality. Available in boxes or bags. Custom lengths available. These feature a durable, scuff-resistant black polyethylene vapor barrier that provides improved protection against damaging ultraviolet light. Installation is made easy with the reinforcing fiberglass yarn scrim, which acts as a rip-stop and helps prevent tearing. These air ducts feature an R-value of 4.2, 6.0 or 8.0 to fit any application, and also come in special configurations designed for manufactured homes.