Microporous Polyethylene Roofing Underlayment Film
Breathable microporous PE film sheet serving as synthetic roofing underlayment, preventing moisture buildup. HTS 3921.19.0010 applies to its cellular microporous polyethylene construction as 'other plastics' sheets.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If non-cellular other plastic sheets
Impermeable plastic sheeting for construction classified as non-cellular other plastics.
If fabricated into fittings or mounts
Plastic fittings for construction if shaped/assembled beyond plain sheets.
If needle-punched into nonwoven
Nonwovens of polypropylene, whether or not impregnated, exceed plain film classification.
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Import Tips & Compliance
• Provide tensile strength and UV resistance specs to support construction-grade durability claims
• Ensure invoice describes as 'microporous film' not 'underlayment' to prevent end-use misclassification
• Check width/length restrictions for Free (B) per US note if ≤38.1cm x 45.7cm
Related Products under HTS 3921.19.00.10
Microporous Polyethylene Breathable Film
This is a cellular microporous polyethylene film designed for breathable applications, allowing vapor transmission while blocking liquids. It falls under HTS 3921.19.0010 as it is a microporous sheet of polyethylene, classified as 'other plastics' cellular plates, sheets, film with microvoids formed during extrusion.
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