## Common ground
All options refer to flush doors made from different primary materials.
## Options at a glance
**3925.20 – Made of plastic material**
- **Defining trait:** Core or surface material is synthetic polymer (e.g., PVC, ABS).
- **Typical examples:** PVC-faced interior doors, molded plastic core doors.
- **Best fit when:** Lightweight, moisture-resistant, low-cost doors for humid areas (bathrooms, kitchens).
**4418.1X,4418.2X – Made of wood**
- **Defining trait:** Primary structure or veneer is natural wood (solid or laminated).
- **Typical examples:** Solid wood doors, plywood core with wood veneer.
- **Best fit when:** Aesthetic appeal, durability, and traditional look are priorities.
**7308.30 – Made of iron or steel**
- **Defining trait:** Structural frame or skin is ferrous metal (typically steel).
- **Typical examples:** Security doors, fire-rated steel doors, industrial doors.
- **Best fit when:** High security, fire resistance, or heavy-duty use required.
**7610.10 – Made of aluminium**
- **Defining trait:** Frame or cladding is aluminum alloy (lightweight, corrosion-resistant).
- **Typical examples:** Modern interior doors, sliding doors, commercial building doors.
- **Best fit when:** Lightweight design, modern appearance, and resistance to weather/oxidation needed.
## Key differences
| Feature | Plastic | Wood | Iron/Steel | Aluminium |
|------------------|---------------|--------------|----------------|----------------|
| Weight | Light | Medium | Heavy | Light |
| Durability | Moderate | High (if maintained) | Very high | High |
| Aesthetics | Modern, plain | Natural, warm | Industrial | Sleek, modern |
| Moisture resistance | Excellent | Low (needs sealing) | Good | Excellent |
## How to choose
- Is the door primarily for moisture-prone areas like bathrooms? → 3925.20
- Does it need a natural wood look or traditional feel? → 4418.1X,4418.2X
- Is security or fire resistance critical? → 7308.30
- Is it part of a modern design with lightweight needs? → 7610.10
## Overlaps & pitfalls
A door may combine materials (e.g., aluminum frame with plastic panel), but the **primary structural material** determines classification. If unclear, prioritize the main load-bearing or visible component. No option is inherently more correct—choose based on dominant material