Other
Ceramic building bricks, flooring blocks, support or filler tiles and the like: > Other
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified 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.
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.
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.
Standard Ceramic Chimney Bricks
Fired ceramic bricks shaped for chimney construction, providing weather resistance and structural integrity. HTS 6904.90 covers these as other ceramic building bricks, excluding true refractory linings.
Extruded Ceramic Partition Blocks
Extruded and fired ceramic blocks for lightweight interior partitions in commercial buildings. These qualify under HTS 6904.90 as other ceramic flooring blocks and the like, due to their fired clay composition.
Structural Ceramic Filler Panels
Pre-shaped fired ceramic panels used as fillers in structural insulated panels for energy-efficient buildings. HTS 6904.90 includes these as support or filler tiles after high-temperature firing.