DUCT FLEXIBLE INSULATED FOIL FACED R6 18

Atco 36 Series Double-Ply Flexible Insulated Air Duct, 18 in ID, 25 ft L, 5000 fpm, Metallized Polyester Jacket Atco #030, 036, and 031 are UL 181, Class 1 Air Ducts and are manufactured with a tri-directional fiberglass scrim reinforced, metallized 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 #036 and 031 have increased insulation for superior thermal performance.