4811.51.20 - 0.3 mm or more in thickness

This HTS category, 4811.51.20, specifically classifies bleached paper and paperboard that has been coated, impregnated, or covered with plastics (excluding adhesives) and weighs more than 150 g/m². These materials must be presented in strips or rolls exceeding 15 cm in width, or in rectangular sheets with one side exceeding 36 cm and the other exceeding 15 cm when unfolded. The defining characteristic for this particular subcategory is that the paper or paperboard has a thickness of 0.3 mm or more.

This differs from its sibling category, 4811.51.40.00 "Other," which would encompass bleached, plastic-coated papers and paperboards meeting the width and weight criteria but not the specific thickness requirement of 0.3 mm or more. Therefore, the distinction between these two categories lies primarily in the physical dimension of the paperboard's thickness.

The subcategories under 4811.51.20 further refine this classification based on the intended end-use. The primary subdivision, 4811.51.20.10, isolates base stock specifically manufactured for milk cartons and other beverage containers. The remaining "Other" subcategory would then capture all other bleached, plastic-coated paper and paperboard meeting the thickness and dimensional criteria but not designated for beverage container production.