Atco 078 Series 17802418 Insulated Flexible Duct, 18 in Dia, 25 ft L, R-8, 4 in-WG, Polyester

Atco Insulated Flexible Duct, 25 ft Length, 18 in Diameter, 4 in-WG, Polyester, Gray, R-Value: R-8, 5000 fpm Velocity Rating, -20 to 140 deg F, 0.6 perm Vapor Transmission

Atco 070, 076 and 078 are UL 181, Class 1 air ducts and are manufactured with a tri-directional fiberglass scrim reinforced, gray polyester outer jacket. A double lamination of tough polyester which encapsulates a steel wire helix forms the air-tight inner core of the Atco 070, 076 and 078. The double layer core of each product is wrapped with a thick blanket of fiberglass insulation. 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.

• Air-tight inner core - energy efficient/no fiberglass erosion into air stream
• Encapsulated wire helix no unraveling when cut to length, quick installation
• Smooth inner core - low friction loss, lower operating cost
• Highly-resistant to mold growth
• Tough reinforced gray polyester jacket - tear and puncture-resistant/low maintenance
• Lightweight compact carton - reduces warehouse and jobsite handling cost
• Formaldehyde-free - made with Owens Corning EcoTouch insulation

Specifications