Porous Unglazed Quarry Tiles
Durable unglazed quarry tiles crafted from natural clay, fired to achieve water absorption over 10%, commonly used for heavy-duty flooring in garages or patios. Classified in 6907.23.10.51 due to their unglazed finish and high porosity distinguishing them from finer ceramic tiles.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If glazed surface applied
Glazed versions shift to 6907.22, as surface treatment changes the specific tile subheading.
If primarily for industrial furnace linings
If marketed as refractory bricks rather than tiles, moves to Chapter 69 refractories.
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
• Include manufacturer specs confirming unglazed surface and high absorption; customs may test samples on entry
• Avoid common pitfall of incomplete firing documentation—prove post-shaping firing above room temp per Chapter 69
• Label as paving/hearth tiles if applicable; generic 'ceramic tile' declarations risk scrutiny
Related Products under HTS 6907.23.10.51
Unglazed Terracotta Paving Tiles
These unglazed terracotta tiles are fired ceramic products with a water absorption coefficient exceeding 10% by weight, made from clay-based materials ideal for outdoor paving. They fall under HTS 6907.23.10.51 as unglazed wall or paving tiles not suitable for roofing, with their porous nature confirmed by ASTM C373 testing.
Rustic Unglazed Clay Wall Tiles
Hand-formed unglazed clay tiles with high water absorption (>10%) for decorative interior/exterior walls, fired from inorganic nonmetallic materials like clays. HTS 6907.23.10.51 applies to these other unglazed tiles excluding specific mosaic or roofing types.
High-Porosity Hearth Tiles
Unglazed ceramic hearth tiles designed for fireplace surrounds, with water absorption over 10% allowing breathability and heat resistance. Fits 6907.23.10.51 as fired unglazed paving/hearth tiles of high porosity, distinct from refractory bricks.
Outdoor Patio Unglazed Tiles
Frost-resistant unglazed tiles for patios, made from fired clay with >10% water absorption to prevent cracking in wet climates. Under 6907.23.10.51 for other unglazed high-porosity paving tiles.
Exposed Aggregate Ceramic Paving Slabs
Unglazed paving slabs with textured exposed aggregate surface, high water absorption >10%, fired for pathways. 6907.23.10.51 covers these as other unglazed tiles under thickness limits.