Transformer Pressboard from Canada
High-density pressboard weighing over 225 g/m², made from compressed wood fibers, used as insulation in oil-immersed electrical transformers. It falls under HTS 4805.93.20.00 as uncoated pressboard, not further worked beyond note 3 specifications, in sheets for electrical applications.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Verify grammage exceeds 225 g/m² via lab testing; customs may require certification to confirm pressboard specs
• Provide end-use declaration for electrical insulation to avoid reclassification; include transformer manufacturer specs
• Watch for moisture content limits under 8% to prevent mold issues during transit; common pitfall is improper packing