4411.13.90 - Other

This HTS category, 4411.13.90, pertains to medium density fiberboard (MDF) that is of a thickness exceeding 5 mm but not exceeding 9 mm, and which is classified as "Other." This classification is reserved for MDF panels meeting the specified thickness and density requirements that do not fall under the more specific subcategories of medium density fiberboard. It represents a residual classification for products not otherwise delineated within the medium density fiberboard group.

Within the same level of classification, the sibling category 4411.13.60.00 specifically covers medium density fiberboard of this thickness that is *not* surface covered, with the exception of oil treatment. Therefore, 4411.13.90 primarily differentiates itself by encompassing those medium density fiberboards of the specified thickness that *are* surface covered in a manner not covered by other specific provisions, or those that possess other characteristics not captured by the sibling category.

This category further subdivides into two distinct subcategories. The first, 4411.13.90.10, addresses standard wood molding made from this type of fiberboard, indicating a specific end-use application for the material. The second, 4411.13.90.90, functions as a further residual classification, encompassing all other types of medium density fiberboard that meet the thickness criteria and are not otherwise specifically classified, including those with various surface treatments beyond simple oil treatment.