Thermal Mass Concrete Blocks
Dense concrete blocks designed to store and release heat for passive solar buildings. Classified HTS 6810.11.00.70 as unreinforced artificial stone building blocks. High thermal capacity from specific aggregates.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
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
• Certify aggregate types for thermal claims; R-value docs optional
• Ensure uniformity for LEED credits
Related Products under HTS 6810.11.00.70
Sound-Absorbing Concrete Blocks
Concrete blocks engineered with internal textures or materials to reduce noise in urban barriers or studios. HTS 6810.11.00.70 applies as unreinforced building blocks of artificial stone for construction. Acoustic properties don't change core classification.
Concrete Garden Border Blocks
Small scalloped or rectangular concrete blocks for defining garden beds and paths. HTS 6810.11.00.70 for other concrete building/landscaping blocks, unreinforced.
Concrete Foundation Blocks
Precast blocks for pier-and-beam foundations, providing level bases. HTS 6810.11.00.70 as unreinforced concrete building blocks.
Concrete Screen Blocks
Lattice-pattern concrete blocks for privacy screens and facades. HTS 6810.11.00.70 other blocks.
Concrete Utility Blocks
Versatile blocks for cable trenches or meter bases. HTS 6810.11.00.70.
Concrete Lintel Blocks
U-shaped blocks for door/window headers. HTS 6810.11.00.70.