## Common ground
All options refer to door guards—protective devices installed at door thresholds to prevent damage from impacts or to improve safety.
## Options at a glance
**3925.90 – Made of plastic material**
- **Defining trait:** Constructed primarily from plastic, offering lightweight and impact-resistant properties.
- **Typical examples:** Plastic threshold guards, rubber-plastic hybrid door bumpers.
- **Best fit when:** The guard is flexible, lightweight, or used in environments where corrosion resistance or low noise is important.
**8302.41 – Made of base metal**
- **Defining trait:** Constructed from metals like steel or iron, providing high durability and strength.
- **Typical examples:** Steel door edge protectors, heavy-duty metal threshold guards.
- **Best fit when:** The guard must withstand repeated heavy impacts, industrial use, or high-traffic areas.
## Key differences
| Feature | 3925.90 (Plastic) | 8302.41 (Base Metal) |
|---------------------|--------------------------|----------------------------|
| Material | Plastic | Steel, iron, or base metal |
| Durability | Moderate | High |
| Weight | Light | Heavy |
| Use case | Indoor, light traffic | Industrial, high traffic |
## How to choose
- Is the door guard made of plastic? → 3925.90
- Is it made of steel or another base metal? → 8302.41
## Overlaps & pitfalls
A door guard could combine plastic and metal (e.g., metal core with plastic cover), but the primary material determines classification. If unclear, prioritize the dominant structural material. No option is vague—both are clearly defined by material type