Thermaflex Insulated Duct is highly efficient, thermally insulated and flexible! Designed for use in low and medium pressure heating and cooling systems, it's acoustically rated, self-extinguishing CPE core easily expands over fittings. The core is also 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. The smooth liner, insulation, and tough vapor barrier provide even airflow and a double air seal.
Acoustically rated, self-extinguishing CPE core
Easily expands over fittings
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