All thermal performance (R-Values) are certified by the air diffusion council (ADC) and classified by UL LLC in accordance with ADC flexible duct performance and installation standard using ASTM C-518, at installed wall thickness, on flat insulation only. Atco Omniair 1200 is a UL 181, class 1 air duct and is manufactured with a tri-directional fiberglass scrim reinforced, metallized polyester outer jacket. A triple lamination of metallized polyester, aluminum foil and polyester, which encapsulates a steel wire helix, forms the airtight inner core. The multi-layer core is wrapped in a thick blanket of fiberglass insulation. The Omniair 1200 is designed for low to medium operating pressures.
Atco Insulated Flexible Duct, 25 ft Length, 14 in Diameter, Polyester, R-Value: 4.2, 5000 fpm Velocity Rating
|Velocity Rating||:||5000 fpm|