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 Bi-directional reinforced metallized jacket resists tearing reduces chance for damage to vapor barrier 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

The M-KE acoustical duct offers exceptional sound control. Its acoustically-rated chlorinated polyethylene (CPE) core allows sound energy transmission through the core and insulation and into the plenum space. A highly efficient, self-extinguishing duct, the M-KE is suitable for use in all pressure heating and cooling systems. THERMAFLEX® M-KE air duct 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. THERMAFLEX® M-KE air duct provides economical means for handling misalignment between system components and ducting around obstacles where fabricated and fitted ducts are difficult and costly to install. THERMAFLEX® air duct is equally suitable for new jobs or refit work and is especially useful when making system 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 THERMAFLEX® M-KE is a highly efficient duct because the liner, in combination with the reinforced, metallized vapor barrier, provides a double air seal.