The Quietflex UV-Inhibited Black Jacket Flex Duct has a UV-inhibited polyethylene vapor barrier.
UV-Inhibited black jacket flexible duct has a UV-inhibited polyethylene vapor barrier|Johns Manville Formaldehyde-free fiberglass insulation|Galvanized or bronze metal core reinforcing|Oversized core to fit on collars and register boxes|Easy-to-carry package: up to 10 in bags are strapped to form a pair|Weather resistant packaging|Polyester core/polyethylene vapor barrier
Quietflex Flexible Duct, UV-Inhibited Insulated, Series: 60 Series, 10 in Inside Dia, 25 ft Length, 6000 fpm, R6 Insulation Value, 0.11 perm Vapor Transmission, -1/2 to 10 in-WC, -20 to 180 deg F, Polyester/Fiberglass/Polyethylene, Black, Domestic