Vermiculite Ceramic Insulating Brick from Japan
Solid building brick incorporating expanded vermiculite aggregate in a fired clay matrix for superior thermal resistance, used in energy-efficient wall construction. Classified under HTS 6904.10.0010 as heat insulating solid bricks meeting fired ceramic criteria with low thermal conductivity (<0.2 W/mK). Exceeds tile thickness per US notes.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• 1
• Submit material composition analysis showing clay base with vermiculite filler to confirm ceramic nature. 2
• Include manufacturer specs confirming firing process and heat insulation rating. 3
• Beware of misdeclaration as lightweight concrete blocks (Chapter 68) without proper ceramic firing proof