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4 inch Semi-rigid aluminum duct
4 inch Semi-rigid aluminum duct
Supplier Info
[China Supplier]
Contact Person : Mr. xu Bruce
Tel : 86-21-64919550
Fax : 86-21-64919550
Product Detail
Semi-rigid aluminum duct 1)standard length:3m (compressed to 1m) 2) delivery time:15 Days 3) MOQ:200 (mixed size)

Aluminum semi-rigid duct

 AS-type air duct is designed for wherever Class 1 air duct is required

 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, fireplaces, dust and smoke collectors, as well as a number of other applications requiring a product that is both durable and reliable

Construction MaterialsThe 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 RangeMinimum = -20°F (-28°C)Maximum = 435°F (224°C) 

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

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

Available Diameters3, 4, 5, 6, 7, 8 inches 

Available Lengths10 feet

4 inch Semi-rigid aluminum duct

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