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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for general heat-insulating foamed slag, not specifically acoustical
Acoustical specification directs to .00.10; other insulating uses to general other.
If unfoamed slag aggregate
Portland cement clinkers and granulated slag are Chapter 25 minerals, pre-expansion.
If cement-bonded particle board form
Cement-based articles of Chapter 68 heading 6810 for worked mineral substances.
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Import Tips & Compliance
• Provide chemical analysis showing slag composition (calcium silicate base) and expansion process details
• Comply with DOT specifications if for infrastructure; avoid pitfall of classifying as mere aggregate
• Heavy items require reinforced packaging; check for Section 232 tariffs on steel byproducts
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.
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.
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.