Atco #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 #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/low operating cost
• Thick blanket of fiberglass insulation: energy-efficient/excellent thermal characteristics
• Tough reinforced grey polyester jacket: tear and puncture resistant/low maintenance
• Lightweight compact carton: reduces warehouse and jobsite handling cost
• 25 max flame spread
• 50 max smoke developed

Standards/Certifications: UL 181, NFPA 90A and 90B, IMC, IRC, UMC 10-1 (ICC ES report no. ESR-1268), HUD 515-2.1(b)

Applications: For indoor use as a supply and return air duct in residential and commercial low-to-medium pressure heating and air conditioning systems

• Specification Sheet https://www.plumbers-supply-co.com//ASSETS/DOCUMENTS/ITEMS/EN/UNI-PS12147_Spec.pdf