MPI Air Conditioning Flexible Air Duct - 25 ft Box
20601-04 / 480-3000
Double lamination of tough polyester, which encapsulates a steel wire helix, forms air-tight inner core. Seamless black polyethylene vapor barrier surrounds thick blanket of fiberglass insulation. R value 4.2 and meets or exceeds UL-181, NFPA 90A and 90B standards. Resistant to ozone, UV, and corrosion. For Class 1 Heating and AC Duct applications. Operating temperature -20°F to 250°F (-29°C -121°C). Please Select from 4" to 9" Internal Diameter 5", 6", and 7" Ducts in stock.