Your browser is not supported. For the best experience, you should upgrade to a modern browser with improved speed and security.

Atco 500 3" x 25' Fu 2-Ply Uninsulated Air Connector

Item: FD-3X25-UI
MFR: 05502503

Store Inventory

Sign in to see real-time inventory at the stores closest to you.
What’s the price?
Sign in for pricing.

About This Product

Product Info


Atco's UPC #050 is a UL 181 Class 1 Air Connector which meets the requirements of NFPA (90A & 90B). UPC #050 is manufactured with a tough triple ply duct wall construction. 25' lengths, which can be easily
cut to desired length, are compressed and packed in small, easy to store cartons.

The UPC #050 is air-tight and is designed for low to medium operating pressures in HVAC systems.
A triple lamination of tough metallized polyester, aluminum foil and polyester encapsulates a steel wire helix and forms the air-tight uninsulated flexible duct of Atco's #050.
Features and Benefits
Durable Metallized Polyester,
Aluminum Foil, and Polyester
Laminate Construction
Tear and puncture resistant
Low maintenance
Flexible and Maintains Shape
Easily handled and installed
Low labor cost
Energy efficient
Encapsulated Wire Helix
No unraveling when cut to length
Quick installation
Smooth Inner Core
Low friction loss
Low operating cost
Lightweight Compact Carton
Reduces warehouse and job site handling costs.

Warning: this product contains a chemical known to the State of California to cause cancer.


Weight1.892 Pounds (lbs)
Width7.25 Inches (In)
Height7.25 Inches (In)
Country of OriginUSA
Length20 Inches (In)
ApplicationAir Distribution
ComplianceUL 181 Air Connector, ICC Codes
Core MaterialPolyester/Wire Helix Core
FeaturesPlain Ends
Fire RatingFlame Spread: 25 max, Smoke Developed: 50 max
Inside Diameter3"
Jacket MaterialPolyester
Maximum Air Flow5000 FPM
Maximum Pressure10" W.G.
Maximum Temperature180°F (82.2°C)
Operating Temperature-20°F to 180°F (-28.8°C to 82.2°C)
Pressure Rating6" w.g. - 4" thru 12" Dia., 4" w.g. - 14" thru 20" Dia.
Prop 65Yes
Size3" x 25'
Vapor Transmission.05 perms
Warranty OfferedYes


Equipment Part List