Aluminum Foil Laminated Polypropylene Air Duct Hose
Flexible polypropylene hose laminated with aluminum foil and steel wire helix for HVAC ventilation. Classified in HTS 3917.39.00.10 for metal-reinforced plastic hoses used in air conveyance systems. The metal provides shape retention and pressure handling.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If without metal reinforcement
Lacks metal helix, placing it in non-reinforced plastic tubing category.
If aluminum predominant over plastic
If aluminum foil/layer exceeds plastic by weight, shifts to aluminum tubes.
If rigid sections over 38cm width
Exceeds size limits for Free (B) rate but may fit plates/sheets if not tubular.
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Import Tips & Compliance
• Certify flame retardancy for building code compliance
• Specify lamination vs embedded reinforcement
• Pitfall: confusing with fabric ducts under textile chapters
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