Additional InformationADC Certified|ASTM C-518|Cities of Chicago|County of Dade (Florida)|California State Fire Marshal|GreenGuard Certified|HUD Approved|ICC-ES ESR-1268|IMC Approved|IRC Approved|New York|NFPA 90A/90B|San Francisco|UL 181|UMC 10-1
Marketing InformationAtco #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.