ADC Compliant|AHCA Approved|ASTM C518|cULus Listed|HARDI Approved|NADCA Standard|NEPA 90A/90B|OSHPD Standard|UL Listed

• Acoustically-rated resilient calendared film core assures quiet performance Core material will not support mold and mildew growth Fully lined for efficient air delivery Large diameter, heavy, spring steel wire helix assures dimensional stability, resists mechanical abuse and provides more efficient air delivery Highly-resistant to rust and corrosion Uniquely constructed core will not unravel when cut All components are self-extinguishing and will not support flame Outward cast of heavy spring steel helix keeps duct core from shrinking up inside insulation and jacket, resulting in less waste Resilient calendared film core material will stretch over fittings providing a "snug" fit and reducing labor costs associated with a poor fit Resilient calendared film core will not "blow-out" and eliminates costly call backs Labor savings and reduced waste result in lower installed costs

Highly efficient, thermally insulated flexible duct for use in low and medium pressure heating and cooling systems. Acoustically-rated, self-extinguishing CPE core easily expands over fittings. Core is permanently bonded to a coated spring steel wire helix that supports an ample blanket of fiberglass insulation over a fiberglass scrim and a tough polyethylene vapor barrier. Smooth liner, insulation and tough vapor barrier provide even airflow and a double air seal. THERMAFLEX® G-KM air duct is a thermally insulated, fully lined, flexible air duct designed for use in low to medium pressure cooling and heating systems. It is used in either supply or return sections - for branch ducts and branch connections to or between mixing units, induction units, control or terminal units and diffusion devices, including light troffers. It provides economical means for handling misalignment between systems components and ducting around obstacles where fabricated and fitted ducts are difficult and costly to install. It is equally suitable for new jobs or refit work and is especially useful when making systems extensions or for changing conditioned zones, now or in the future. Compliance with NFPA Standards lets you install lengths longer than the limitation applying to connectors. It is a highly efficient part of the total duct system because the smooth liner, the ample insulation and tough vapor barrier provide good air flow, thermal insulation and a double air seal. The heavy spring steel wire helix assures dimensional stability and more efficient air delivery particularly in tight radius bends.