HS Code for Chimney liners

Chimney liners made of ceramic materials are classified under HS code 6905.90. Chapter 69 covers ceramic products, which are defined as articles formed by shaping and then firing inorganic, non-metallic materials. Heading 6905 includes roofing tiles, chimney-pots, cowls, chimney liners, architectural ornaments, and other constructional goods. While 6905.10 is dedicated specifically to roofing tiles, 6905.90 serves as the residual category for other constructional ceramic items, including liners. These liners are essential components in chimney construction, designed to contain the products of combustion and protect the chimney walls from heat and corrosion. The classification is based on the material composition (ceramic) and the intended use in construction. If the liner is made of a different material, such as metal or concrete, it would fall under a completely different chapter of the Harmonized System.

Products Included

• Ceramic flue liners
• Clay chimney liners
• Refractory ceramic chimney liners
• Ceramic chimney pots and cowls

Common Misclassification

Chimney liners are often misclassified based on their material. For instance, stainless steel chimney liners are classified under heading 7308 as structures of iron or steel. Flexible chimney liners made of base metal fall under 8307. Additionally, if the liners are made of concrete or artificial stone, they are classified under heading 6810. Confusion can also arise with refractory bricks (6902), but chimney liners are specifically named in the 6905 heading.

FAQ

What is the HS code for chimney liners?

The HS code for ceramic chimney liners is 6905.90, which covers various ceramic constructional goods excluding roofing tiles.

Are industrial furnace liners included here?

No, liners specifically designed for industrial furnaces or kilns are usually classified as refractory goods under heading 6902, as they are designed to withstand much higher temperatures than standard domestic chimney liners.