Tongue-and-Groove MDF Subfloor Underlayment from Canada
Ultra-thin 3.6mm MDF panels with interlocking tongue-and-groove edges, used as underlayment beneath vinyl flooring in wall-to-wall building floor preparations. Classified HTS 4411.12.3000 for construction-dedicated thin MDF despite floor use interpretation under wall/ceiling/other parts.
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
• Document as 'building parts' even for floor applications; CBP interprets broadly for construction
• Include thickness caliper measurements and edge profile diagrams in entry docs
• Formaldehyde labeling mandatory for all interior building products