Atco Rubber - 4002506 - 040 6" x 25' R4.2 Mobile Home Flexible Duct

Item: ATC4006
MFG: 4002506
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6" x 25' R4.2 Mobile Home Flexible Duct


Flexible 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

Features and Specification

Insulated Yes
Inside Diameter 6"
Fire Rating Passes UL 181 Fire Tests
EAN 0671094148970
Brand ATCO
Core Material Black Polyester
Certifications UL Greenguard Gold
Compliance UL 181, Class 1 Air Connector
Composition Polyethylene Vapor Barrier
Size 25'
Tier UPC #040
R-Value R4.2
UL Listed Yes
UL Recognized Yes
UPC 671094148970
Warranty Offered Yes
Maximum Air Flow 5000 FPM
Maximum Temperature 250°F (121.1°C)
Operating Temperature -20°F to 250°F (-28.8°C to 121.1°C)
Package Height 8.7500
Package Length 29.0000
Package Weight 8.9900
Package Width 8.7500
Pressure Rating 4" w.g. pos., 8"-10" dia., 2" w.g. pos., 12"-14" dia., 3/4" w.g., all dia.
Maximum Pressure 10" W.G.


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