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Bitumen Impregnated Hardboard for Exterior Siding Backer from Canada

Low-density hardboard variant impregnated with bitumen to serve as weather-resistant backing for vinyl siding installations. Provides dimensional stability in humid climates. HTS 4411.94.00.70 due to fiberboard nature, density spec, and bitumen processing.

Duty Rate — Canada → United States

10%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada

Import Tips

Confirm 'other' density category excludes lacquered or overlaid variants under 4411.94.00.50

Use correct country-of-origin marking visible after installation per CBP rules

Avoid bulk packaging declarations that might trigger valuation disputes

Bitumen Impregnated Hardboard for Exterior Siding Backer from Canada — Import Duty Rate | HTS 4411.94.00.70