DetailsFlexible Duct Systems
25’ Insulated UL 181 Class 1 Air Duct
UPC #040 - R-Value 4.2
UPC #046 - R-Value 6.0
UPC #048 - R-Value 8.0
Description: Atco #040, 046, and 048 are UL 181, Class 1 Air Ducts and are manufactured with a black, heavy-duty polyethylene jacket which complies with the HUD requirements for outdoor mobile home or modular home installation.
The UPC #040, #046, and #048's inner core is air-tight and is designed for low-to-medium operating pressures in HVAC systems.
Construction: A double lamination of tough polyester which encapsulates a steel wire helix forms the air-tight inner core. The double-layer core is wrapped in various thicknesses of fiberglass insulation blankets to provide the R-Value specific to each product. The core and insulation are reinforced with scrim, and sheathed in a rugged and durable black seamless polyethylene jacket.
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
Black, Heavy-Duty Polyethylene Jacket - Tear and puncture resistant / Low maintenance.
Lightweight Compact Carton - Reduces warehouse and Jobsite handling cost.
California residents: see Proposition 65 Warning
Weight 8.99 Pounds (Lb) Width 8.75 Inches (In) Height 8.75 Inches (In) Country of Origin USA Length 29 Inches (In) Brand ATCO R-Value R4.2 Certifications UL Greenguard Gold Color White Composition Polyethylene Vapor Barrier Core Material Black Polyester Fire Rating Passes UL 181 Fire Tests Inside Diameter 6" Insulated Yes Maximum Air Flow 5000 FPM Maximum Pressure 10" W.G. Maximum Temperature 250°F (121.1°C) Operating Temperature -20°F to 250°F (-28.8°C to 121.1°C) Pressure Rating 4" w.g. pos., 8"-10" dia., 2" w.g. pos., 12"-14" dia., 3/4" w.g., all dia. Size 25' Warranty Offered Yes Compliance UL 181, Class 1 Air Connector UL Listed Yes UL Recognized Yes Tier UPC #040