Expanded Clay Acoustical Partition Boards
Lightweight boards made from expanded clay (LECA) granules bound with mineral adhesives for office partitions that reduce noise transmission. Classified in HTS 6806.90.00.10 for sound-absorbing articles of expanded clays, excluding coated textiles or Chapter 69 items. Ideal for modular interior construction.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If loose expanded clays without forming into boards
Unworked expanded clays are in 6806.20; articles thereof in 6806.90.
If sintered into refractory fireclay bricks
Refractory ceramics of Chapter 69 exclude expanded clay articles.
If containing asbestos-cement
Asbestos articles specifically provided in 6811.
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Import Tips & Compliance
• Test and certify clay expansion process and sound transmission class (STC); label as non-toxic
• For EU imports, meet REACH for clay sourcing; pitfall is bulk import misclassified as raw clay
• Use humidity-controlled shipping to maintain integrity of porous structure
Related Products under HTS 6806.90.00.10
Acoustical Mineral Wool Ceiling Panels
These rigid panels made from compressed mineral wool (rock wool) are designed for ceiling installation in offices and auditoriums to absorb sound waves and reduce echo. They fall under HTS 6806.90.00.10 as sound-absorbing articles of mineral materials, specifically classified as acoustical pads and boards, excluding those of headings 6811 or 6812. The porous structure traps sound energy, providing high Noise Reduction Coefficient (NRC) ratings.
Sound-Absorbing Vermiculite Wall Panels
Panels composed of exfoliated vermiculite mixed with mineral binders form lightweight, fire-resistant boards for wall applications in recording studios and theaters. Classified under HTS 6806.90.00.10 as acoustical boards of expanded mineral materials for their sound-insulating properties. They meet acoustical standards without using excluded materials from other chapters.
Rock Wool Acoustical Stage Backdrop Boards
High-density rock wool boards used behind stages in concert venues to absorb mid-to-high frequency sounds and prevent feedback. They qualify under HTS 6806.90.00.10 as sound-absorbing articles of mineral wools, distinct from mixtures of heading 6811. Custom perforations enhance their acoustical performance.
Foamed Slag Sound Barrier Panels
Panels produced from expanded foamed slag, a byproduct of steel production, offering durable sound absorption for highway noise barriers. Falls under HTS 6806.90.00.10 as acoustical boards of expanded mineral materials, not covered by Chapter 69 exclusions. Their cellular structure provides excellent sound dampening.
Mineral Wool Studio Acoustic Bass Traps
Corner-mounted trapezoidal pads of high-density mineral wool designed to absorb low-frequency bass in music recording studios. HTS 6806.90.00.10 covers these as acoustical pads of mineral wools for sound absorption. Fabric-wrapped but mineral core determines classification.
Exfoliated Vermiculite Fire-Rated Sound Panels
Fire-resistant panels using exfoliated vermiculite for sound control in commercial kitchens and mechanical rooms. Under HTS 6806.90.00.10 as acoustical boards with dual heat/sound insulation from expanded minerals. Exceeds 1-hour fire rating.