This high pressure insulated flexible duct, consists of a core made from vinyl coated fiberglass cloth which is mechanically locked together by a corrosive resistant galvanized steel helix. The liner is draped with thick fiberglass insulation and covered by a flame retardant, non toxic polyethylene vapor barrier.
The properties of this UL-181 Class 1 product combines the rugged puncture resistant fabric with a highly dependable insulated vapor barrier to create a superior high pressure thermal duct ideal for commercial or institutional HVAC use.
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