3214.10.00.90 - Painters' fillings

This HTS category, 3214.10.00.90, specifically covers "painters' fillings." These are preparations designed for filling cracks, holes, imperfections, or joints in surfaces prior to painting or finishing. They are typically viscous or paste-like substances that harden upon application, creating a smooth and uniform base for subsequent decorative or protective coatings. Examples include spackling paste, wood filler, and wall putty specifically formulated for use by painters.

Within the broader classification of mastics and putty, this category is distinct from "mastics" (3214.10.00.10), which are generally more robust sealing compounds used for filling larger gaps, joints, or for weatherproofing applications. While both involve filling materials, painters' fillings are characterized by their fine texture and intended use in surface preparation for aesthetic finishing, whereas mastics may have a coarser composition and focus on structural sealing or adhesion.

As this is a leaf node within the HTS, there are no further subcategories. Therefore, classification within this code hinges on the primary intended use of the product as a filling material for surfaces being prepared for painting. The composition and physical characteristics should align with the function of providing a smooth, paintable surface.