6910.10.00.15 - Flush tanks

HTS code 6910.10.00.15 specifically classifies flush tanks made of porcelain or china. These are essential components of a water closet (toilet) system, designed to store and release a measured volume of water to effectively clear the bowl after use. The "porcelain or china" designation refers to the material composition, indicating ceramic products fired at high temperatures to achieve a vitreous, non-porous, and durable finish, characteristic of fine ceramics.

This classification distinguishes flush tanks from other ceramic sanitary fixtures and related components. For instance, sibling categories include "Water closet bowls, flushometer type" (6910.10.00.05), which are bowls designed for use with a separate flushometer device, and "Water closet bowls with tanks, in one piece" (6910.10.00.10), which are integrated units. It also differs from "Other water closet bowls" (6910.10.00.20), which would cover bowls not fitting the flushometer or one-piece description, and "Sinks and lavatories" (6910.10.00.30). Therefore, 6910.10.00.15 isolates the distinct functional unit of the flush tank itself, when manufactured from porcelain or china.

As a leaf node, HTS code 6910.10.00.15 has no further subdivisions. The classification is final for porcelain or china flush tanks. Classification decisions at this level hinge on the precise identification of the article as a standalone flush tank and confirmation of its porcelain or china composition, distinguishing it from complete toilet units or other ceramic sanitary ware.