5" x 25' M-KC R6 Insulated Silver Flexible Air Duct - Box

Thermaflex® M-KC is designed for use in all 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 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 duct in higher pressure systems because the liner, in combination with the reinforced, metallized vapor barrier, provides a double air seal.