Fired Clay Chimney Liners
Cylindrical fired clay pipes used to line interior chimney flues, protecting against heat and corrosion. These are ceramic constructional goods, classified under tariff item 6905.90.00 as other ceramic constructional products, as they are not refractory goods under heading 6903.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 7% | — | 7% |
| 🇲🇽Mexico | 7% | — | 7% |
| 🇺🇸United States | 7% | — | 7% |
| 🇩🇪Germany | 7% | — | 7% |
| 🇯🇵Japan | 7% | — | 7% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the liners are made of refractory ceramics with over 50% free carbon
Refractory ceramic goods with high carbon content are classified under heading 6903.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the liners are fired above 800°C and not merely dried, as per Chapter 69 note 1(b)
• Provide the CBSA with the firing temperature and clay composition to support classification
• If the liners are made of refractory materials, they may fall under heading 6903 instead
Related Products under Tariff item 6905.90.00
Ceramic Architectural Coping Stones
Fired ceramic sloped caps designed to sit atop walls and parapets, shedding water and protecting masonry from weathering. These are constructional ceramic goods shaped and fired above 800°C, falling under tariff item 6905.90.00 as other ceramic constructional products.
Ceramic Chimney Cowls
Fired ceramic caps placed over chimney tops to prevent downdrafts, rain, and debris from entering the flue. These are constructional ceramic goods explicitly within the scope of heading 6905, which includes chimney components, and are classified under tariff item 6905.90.00 as other ceramic constructional products.
Ceramic Chimney Pots
Tall, fired clay cylinders mounted on chimney tops to improve draft and protect the flue opening. These are ceramic constructional goods directly named in heading 6905, which includes chimney pots, and are classified under tariff item 6905.90.00 as other ceramic constructional products.
Ceramic Finial Ornaments
Spire-like fired ceramics placed atop roof peaks or chimneys for decoration and closure, adding architectural detail. These are architectural ornaments, classified under tariff item 6905.90.00 as other ceramic constructional products, as they are not more specifically covered elsewhere in Chapter 69.
Ceramic Gable Vent Louvers
Fired ceramic slatted covers installed over gable vents in buildings to allow airflow while blocking rain and debris. These are architectural constructional goods, classified under tariff item 6905.90.00 as other ceramic constructional products, as they are not more specifically covered elsewhere in Chapter 69.
Ceramic Ridge Crest Tiles
Pointed fired clay tiles used to cap roof ridges, providing weatherproofing and a finished appearance. These are ceramic roofing goods, classified under tariff item 6905.90.00 as other ceramic constructional products, as they are not classified as bricks or standard roofing tiles under heading 6904.