Additional InformationCAN/ULC-S110M Certified|cCSAus Certified|CE Marked|UL 181 Listed
Marketing InformationHi-velocity flexible duct can be installed quickly and easily, delivering the air quietly with a sound absorbing inner core. The inner core is made of a double lamination of foil laminate and clear polyester film which is interlaced with a galvanized steel wire (0.041 in) having a 3/4 in pitch. The core is wrapped with fiberglass insulation certified GREENGUARD having a coefficient of R4.2/R8.4 and is encapsulated by a metalized vapor barrier reinforced with fiberglass string.