4411.94.00 - Of a density not exceeding 0.5 g/cm3

This HTS category, 4411.94.00, pertains to fiberboard of wood or other ligneous materials that possesses a density not exceeding 0.5 g/cm³. These boards are formed by breaking down wood or other fibrous plant materials into their constituent fibers, which are then reformed into panels. The binding agent can be natural wood resins or added organic substances like synthetic resins. The key defining characteristic here is the low density, indicating a relatively lightweight and less compressed material.

This classification is distinct from its sibling categories based on the critical factor of density. Specifically, it differs from 4411.92, which covers fiberboard with a density exceeding 0.8 g/cm³, and 4411.93, which applies to boards with densities between 0.5 g/cm³ and 0.8 g/cm³. Therefore, the physical properties of the fiberboard, particularly its weight per unit volume, are paramount for its correct classification within this group.

Within this low-density fiberboard group, further distinctions are made based on more granular density ranges. The subcategories will likely differentiate between fiberboard with a density exceeding 0.35 g/cm³ but not exceeding 0.5 g/cm³ and any remaining "Other" fiberboard falling under the broader "not exceeding 0.5 g/cm³" umbrella, which might encompass even lower densities or specific manufacturing characteristics not covered by the more precise subdivision.