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Highly efficient, Thermaflex G-KM spiral ducts are premium air vessels for low, medium pressure heating and cooling systems. These acoustically rated, HVAC ducts eliminate noise and feature a core that easily expands over fitting. The core is bonded to a steel wire coil to support the thick fiberglass insulation blanket. These air ducts feature a heavy duty polyethylene vapor barrier that provides even airflow and a double air seal. They are self-extinguishing and won't support flames. Temperature range is from -20F to 250F and -20F to 250F intermittent. Ducts have a 3-20" diameter. Greenguard certified. 10 Year Limited Warranty.

G-Km Thermaflex Flexible Hvac Duct - 9 Inch Diameter R4.2

g-km-thermaflex-flexible-hvac-duct-9-diameter-r4-2

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