Bitumen Sealed Fiberboard Soundproofing Panels from Canada
Low-density fiberboard panels impregnated with bitumen to dampen sound transmission in recording studios and home theaters. The bitumen enhances acoustic absorption while preventing warping. Classified in 4411.94.00.70 for density and specific impregnation.
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
• Label panels clearly as 'fiberboard' not 'insulation' to avoid confusion with Chapter 68 mineral wool products
• Maintain records of production process showing mechanical wood processing origin per subheading notes
• Test for VOC emissions if marketed for interior use to meet CARB/EPA standards