Underlayment MDF 6.35mm
Thin MDF sheets for flooring underlayment, 6.35mm thickness with tongue-and-groove edges. Medium density fiberboard per HTS 4411.13.90.90 'Other'. Provides soundproofing and leveling.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If thickness under 5mm
Thinner fiberboard variants have dedicated subheadings by thickness.
If pre-machined cellular flooring beams
Assembled floor support structures classified as builders' joinery.
If predominantly marble agglomerates
Travertine/stone-based panels fall under worked monumental stone.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Include impact insulation class (IIC) ratings for flooring applications
• Protect edges during shipping to maintain tongue-groove integrity for classification
• Distinguish from OSB (4412.33) via fiber uniformity lab reports
Related Products under HTS 4411.13.90.90
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