Unglazed Ceramic Support Tiles
Unglazed fired ceramic tiles providing structural support in multi-layer flooring systems or wall assemblies. Made from clay fired to hardness, they are classified in HTS 6904.90 as other support tiles, not intended for exposed flooring surfaces.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If finished for wall finishing
Unglazed but finished ceramic wall tiles go to 6907, not building support.
If refractory quality
High-alumina or siliceous support tiles for heat resistance classify under 6903.
If carbon or graphite based
Chapter 69 excludes graphite/carbon ceramics per note (c).
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Import Tips & Compliance
• Label clearly as 'support tiles for construction' to differentiate from consumer flooring
• Provide load-bearing test results if questioned for structural claims
Related Products under HTS 6904.90.00.00
Porous Ceramic Filler Tiles
Lightweight, porous ceramic tiles used as fillers in wall construction or precast concrete panels to reduce weight. Fired from clay and siliceous materials at high temperatures, they fit HTS 6904.90 as support or filler tiles, separate from finished flooring blocks.
Insulating Ceramic Filler Bricks
Low-density ceramic bricks with insulating properties used as fillers in composite building panels. Fired from lightweight clay aggregates at >800°C, classified in HTS 6904.90 as other ceramic support or filler tiles.
Clay Ceramic Retaining Wall Bricks
Durable fired clay bricks for retaining walls in landscaping and civil engineering projects. Classified in HTS 6904.90 as other ceramic building bricks, fired after shaping from inorganic nonmetallic materials.
Red Clay Ceramic Building Bricks
Fired red clay bricks used for constructing exterior and interior walls in residential and commercial buildings. These bricks are shaped from clay mixtures and fired above 800°C, classifying them under HTS 6904.90 as other ceramic building bricks, distinct from refractory bricks in 6902 or floor tiles in 6907.
Fireplace Ceramic Backer Bricks
High-density ceramic bricks used behind firebrick linings in fireplaces for structural support and heat distribution. Fired clay products qualify under HTS 6904.90 as other ceramic building bricks, provided not refractory.
Perforated Ceramic Wall Blocks
Perforated fired ceramic blocks for non-load-bearing partition walls, allowing ventilation and wiring passage. These building components fall under HTS 6904.90 as other ceramic flooring blocks or the like, fired after shaping from clay.