Vulcanized Fiber Transformer Pressboard from Canada
Dense noncellular plates of vulcanized fiber serving as pressboard in oil-immersed transformers. High compressive strength without lamination fits this cellulose derivative subheading. HTS 3920.79.05.00 applies to these unreinforced sheets.
Duty Rate — Canada → United States
13.1%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide oil absorption test data confirming suitability for transformers
• Ensure density specs (1.35-1.60 g/cc) match vulcanized fiber standards
• Separate from phenolic laminates which classify under 3920.99 or 3921