Tongue-and-Groove MDF Subfloor Underlayment
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.
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Alternative Classifications
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Import Tips & Compliance
• 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
Related Products under HTS 4411.12.30.00
MDF Tongue-and-Groove Wall Panels
Thin medium density fiberboard (MDF) panels, 4mm thick, with continuous tongue-and-groove edges on all sides, specifically designed for assembling interior partition walls in residential construction. Classified under HTS 4411.12.3000 due to thickness ≤5mm, edge profiling, and dedication for building wall applications. Meets subheading criteria for construction-grade fiberboard.
Grooved MDF Ceiling Planks
4.5mm thick MDF planks featuring continuous rabbeted grooves along longitudinal edges, engineered for drop-ceiling grid systems and suspended ceiling installations in commercial buildings. Falls under HTS 4411.12.3000 as thin MDF with specified edge treatments dedicated to ceiling construction.
Click-Lock MDF Wall Base Molding
4mm thick MDF strips with proprietary click-lock tongue-and-groove system along edges, designed for baseboard applications in building wall finishes. HTS 4411.12.3000 covers thin construction MDF with continuous edge profiling.
Rabbet-Edge MDF Soffit Panels
Thin 4.8mm MDF soffit panels featuring continuous rabbeted edges for seamless eaves and overhang installations in building exteriors. Dedicated construction use qualifies under HTS 4411.12.3000 profiled thin MDF.
Rabbeted MDF Partition Panels
3.2mm MDF sheets with precision rabbeted edges running continuously along all four sides, intended for modular office partition systems and room dividers in building interiors. HTS 4411.12.3000 applies for thin, edge-profiled fiberboard dedicated to wall construction.
Interlocking MDF Wainscot Panels
3.9mm thickness MDF wall panels with tongue-and-groove interlocking edges throughout, for wainscoting applications in building interiors. HTS 4411.12.3000 for thin construction-dedicated profiled fiberboard.