7011.20 - For cathode-ray tubes:

This HTS category, 7011.20, specifically addresses glass envelopes, bulbs, and tubes that are designed for use as cathode-ray tubes (CRTs). These are essentially the open glass components that form the vacuum vessel of a CRT, excluding any integrated fittings or electronics. The defining characteristic is their intended application in the construction of cathode-ray tubes, which were historically used in televisions, computer monitors, and other display devices.

Within the broader heading of 7011, which covers various glass envelopes for electric lamps and light sources, this subcategory is distinct from 7011.10, designated for components used in electric lighting. It also differs from 7011.90, which encompasses "other" glass envelopes not specifically enumerated. Therefore, 7011.20 is precisely for those glass parts whose ultimate function is to house the electron beam and phosphorescent screen of a CRT.

The subcategories under 7011.20 further refine the classification based on specific parts of the CRT envelope. "7011.20.10.00: Cones" refers to the conical-shaped part of the CRT envelope. The subsequent "Other" designation captures all remaining glass envelope components for CRTs that do not fall under the "cones" classification, ensuring comprehensive coverage for this specific type of glass article.