Flexible Duct UV-Inhibited Mobile Home 8 in Dia 25 ft LG 10 in wc Positive 0.5 in wc Negative -20 to 180 F Continuous -20 to 200 F Intermittent R6 Insulation 6000 fpm Max Polyethylene Vapor Barrier Fiberglass Insulation Black Jacket Round ASTM C518 Meets HUD/FHA NFPA UL