6809.11.00 - Faced or reinforced with paper or paperboard only

This HTS category, 6809.11.00, specifically covers boards, sheets, panels, tiles, and similar articles made of plaster or compositions based on plaster, which are *faced or reinforced with paper or paperboard only*. The defining characteristic is the exclusive use of paper or paperboard for facing or reinforcement, as opposed to other materials. These articles are generally intended for use in construction and interior finishing.

Within the broader category of "Boards, sheets, panels, tiles and similar articles, not ornamented," this subcategory is distinguished from its sibling, 6809.19.00.00 ("Other"). The sibling category would encompass plaster articles of this form that are faced or reinforced with materials *other than* paper or paperboard, or those that are not faced or reinforced at all. The sole criterion for inclusion here is the specific combination of plaster-based material and paper/paperboard facing.

The subcategories under 6809.11.00, namely 6809.11.00.10 ("Of gypsum plaster") and 6809.11.00.80 ("Other"), further refine the classification based on the specific type of plaster used. This distinction is crucial for identifying the exact composition of the plaster material, differentiating between those made primarily of gypsum plaster and other plaster compositions that might be used.