## Common ground
Both options describe a reclining mechanism for furniture, differing only in material composition.
## Options at a glance
**3926.30 – Made of plastic material**
- **Defining trait:** Constructed primarily from plastic (e.g., polypropylene, ABS).
- **Typical examples:** Plastic pivot joints, molded recliner frames, low-cost adjustment levers.
- **Best fit when:** The mechanism is lightweight, non-metallic, and designed for budget or indoor use.
**8302.42 – Made of base metal**
- **Defining trait:** Constructed from ferrous or non-ferrous metals (e.g., steel, aluminum).
- **Typical examples:** Steel linkages, metal pivot arms, heavy-duty recliner hinges.
- **Best fit when:** The mechanism is robust, load-bearing, and used in high-use or commercial furniture.
## Key differences
| Feature | 3926.30 (Plastic) | 8302.42 (Base Metal) |
|---------------------|--------------------------|----------------------------|
| Material | Plastic | Steel, aluminum, etc. |
| Durability | Lower | High |
| Weight | Light | Heavy |
| Use Case | Residential, low load | Commercial, heavy use |
## How to choose
- Is the mechanism made of plastic? → 3926.30
- Is it made of metal (e.g., steel or aluminum)? → 8302.42
## Overlaps & pitfalls
A mechanism may contain both plastic and metal parts (e.g., plastic housing with metal joints). In such cases, the **main structural material** determines the classification. If unclear, prioritize based on the **primary load-bearing component**. The HS codes do not specify size or function—only material—so avoid assuming performance based solely on code