Expanded Clay Pebbles Hydroponic Grow Media
Lightweight clay balls expanded at high temperature for hydroponic plant support and drainage. Classified in HTS 6806.90.00 as expanded mineral material articles for thermal insulation properties.
Import Duty Rates by Country of Origin
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If unexpanded natural clay
Fired and expanded clay changes from raw mineral (chapter 25) to manufactured article.
If molded into terracotta pots
Shaped expanded clay pottery becomes chapter 69 ceramic ware.
If packaged as prepared chemical culture media
Mixtures with fertilizers for retail sale may fall under chemical preparations.
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
• Provide expansion process specs to confirm lightweight insulating properties
• Sterilization certificates prevent agricultural quarantine issues
Related Products under HTS 6806.90.00
Foamed Slag Thermal Panels
Pre-fabricated panels of expanded foamed slag for industrial furnace insulation. HTS 6806.90.00 covers these as sound- and heat-insulating articles of expanded mineral materials, excluding chapter 69 products.
Mixture Mineral Wool Soundproofing Panels
Composite panels blending rock wool and expanded clay for studio sound absorption. HTS 6806.90.00 for mixtures/articles of heat/sound-insulating minerals other than 6811/12.
Perlite Loose-Fill Insulation Bags
Bagged expanded perlite granules for attic loose-fill insulation applications. HTS 6806.90.00 covers these expanded mineral materials packaged as insulating articles.
Rock Wool Insulation Batt
A pre-cut batt made from spun rock wool fibers, designed for thermal and acoustic insulation in walls and ceilings. It falls under HTS 6806.90.00 as a heat-insulating and sound-absorbing article of mineral material, not classified under headings 6811, 6812, or chapter 69.
Exfoliated Vermiculite Insulation Board
Compressed boards of expanded vermiculite used for fire-resistant insulation in construction. Classified under HTS 6806.90.00 as an article of expanded mineral material for heat-insulating purposes, distinct from mixtures of 6811 or ceramics.
Mineral Wool Acoustic Ceiling Tiles
Suspended ceiling tiles incorporating rock wool core for sound absorption in offices. Falls under HTS 6806.90.00 as sound-insulating articles of mineral materials, not furniture of chapter 94.