DUCT FLEXIBLE INSULATED 18inx25ft R8 GRE

Atco 78 Series Double-Ply Flexible Insulated Air Duct, 18 in ID, 25 ft L, 5000 fpm, Polyester Jacket, Domestic

Atco Insulated Air Duct, Double-Ply Flexible, Series: 78 Series, 18 in Inside Dia, 25 ft Length, 5000 fpm, 0.6 perms Vapor Transmission, 10 in WG, Polyester Jacket, Gray, Domestic

Atco #070, 076, and 078 are UL 181, Class 1 Air Ducts and are manufactured with a tri-directional fiberglass scrim reinforced, grey polyester outer jacket. The inner core of all three products is air-tight and designed for low-to-medium operating pressures in HVAC systems. Atco #076 and 078 have increased insulation for superior thermal performance.