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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If crucibles or lab containers
Similar fired shapes but lab end-use go to 6909.
If glass fiber composites
Glass-based insulating articles exclude from ceramic chapter.
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Import Tips & Compliance
• Declare as construction fillers, not finished panels
• R-value documentation supports insulation 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.
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.