8540.12 - Monochrome:

This HTS category, 8540.12, specifically covers monochrome cathode-ray television picture tubes. These are essential components for older television sets and video monitors that display images in black and white, or shades of gray. The classification hinges on the absence of color display capabilities in these tubes, distinguishing them from their color counterparts.

In contrast to sibling category 8540.11, which pertains to color cathode-ray television picture tubes, 8540.12 is exclusively for monochrome applications. This distinction is crucial for accurate tariff application, as different import duties may apply based on the color display technology. The tubes classified here are designed to convert electronic signals into visible images using a single electron beam.

Within this category, further subdivisions exist to refine classification based on physical dimensions. The subcategories differentiate tubes based on the straight-line dimension across their faceplate. This detailed breakdown allows for more precise classification, acknowledging variations in screen size which may be relevant for trade statistics and specific regulatory requirements.