Manufacturer Flexible duct, Semi rigid flexible duct, Kitchen chimney pipe Uninsulated flexible duct 
The corrugated aluminum is twisted to form a continuous airtight lock-seam AS-type air duct is suitable for heating, ventilation and air conditioning systems. 

Technical Data 

Construction Materials 
The air duct is made entirely of aluminum that is twisted to form a continuous airtight lock-seam. 

Operating Pressure (inches water column) 
Positive = 6 inches H²O (1.5 kPa) 
Negative = 6 inches H²O (1.5 kPa) 

Operating Temperature Range 
Minimum = -20°F (-28°C) 
Maximum = 435°F (224°C) 

Velocity (feet per minute) 
5, 000 f.p.m. (25 m/sec) 

Surface Burning Characteristics 
Maximum Flame Spread = 0 
Maximum Smoke Development = 0 

Available Diameters 
3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18 inches 

Available Lengths 
10 feet 

Cnc Associates 
Bengaluru 
Ph. +91 9902070764 / 08064518474 / 08064518475 
cncassociates@gmail.com 

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