Bitumen Treated Fiberboard Vapor Barrier Sheets from Mexico
Flexible low-density fiberboard sheets impregnated with bitumen to control moisture vapor transmission in building envelopes. Installed in crawl spaces and attics. 4411.94.00.70 classification reflects fiberboard base, low density, and specific impregnation.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include permeability test results to support vapor barrier claims during customs review
• Ensure consistent thickness declarations to match statistical reporting suffixes
• Monitor EU-sourced goods for potential forest certification requirements