## Common ground
All options are mountings, fittings, and similar articles used in building construction.
## Options at a glance
**3925.90,3926.30 – Made of plastic material**
- **Defining trait:** Constructed from synthetic or polymer-based plastics, often lightweight and corrosion-resistant.
- **Typical examples:** Plastic wall anchors, PVC pipe fittings, plastic ceiling clips.
- **Best fit when:** The product is non-metallic, flexible, or used in environments where rust or weight are concerns (e.g., bathrooms, outdoor use).
**6914 – Made of ceramic**
- **Defining trait:** Crafted from fired clay or similar inorganic materials, typically hard and brittle.
- **Typical examples:** Ceramic wall tiles with mounting features, ceramic pipe joints, decorative building fittings.
- **Best fit when:** The product is part of a decorative or high-temperature-resistant application (e.g., kitchen backsplashes, fire-rated installations).
**8302.41 – Made of base metal**
- **Defining trait:** Constructed from common non-precious metals like steel, iron, or aluminum.
- **Typical examples:** Metal brackets, steel wall anchors, aluminum window fittings.
- **Best fit when:** The product requires high strength, load-bearing capacity, or durability in structural applications.
## Key differences
| Feature | Plastic | Ceramic | Base Metal |
|---------------------|------------------|-------------------|-------------------|
| Material density | Low | High | Very high |
| Durability | Moderate (brittle if thin) | Low (fragile) | High |
| Corrosion resistance| Excellent | Good | Poor (unless coated) |
| Typical use | Light-duty, indoor/outdoor | Decorative, high-temp | Structural, heavy-duty |
## How to choose
- Is the product made of plastic or polymer? → 3925.90,3926.30
- Is it ceramic (fired clay) and used for decoration or heat resistance? → 6914
- Is it metal (steel, iron, aluminum) and designed for strength or load-bearing? → 8302.41
## Overlaps & pitfalls
A product could combine materials (e.g., ceramic with metal insert), but the primary material determines classification. If unclear, prioritize the dominant structural material. No option is inherently more correct—choose based on the main material used