Iron Chimney Flue Liner Tube
Single-wall nonalloy steel tube for chimney flue liners in masonry fireplaces, 6-inch diameter. HTS 7306.90.10.00 for other tubes.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If cast iron material
Table, kitchen or fireplace cast articles in 7323.
If with connector fittings
Flue fittings classified as tube fittings.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• UL safety listings required for fireplace components
• Length limits per section to avoid freight issues
• Differentiate from cast iron liners (7323)
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