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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If refractory for fire lining
Direct fireplace lining bricks are refractory under 6902 if high-temp rated.
If sold as ornamental fireplace decor
Decorative ceramic statuettes or ornaments for fireplaces classify in 6913.
If laboratory grade
Precision-fired for lab furnaces go to 6909 as ceramic laboratory ware.
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Import Tips & Compliance
• Certify maximum service temperature <1000°C to avoid refractory classification
• Bundle with installation guides showing building use
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.
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.