## Common ground
All options refer to door frames classified by their primary material.
## Options at a glance
**3925.20 – Plastic**
- **Defining trait:** Made primarily from synthetic plastic (e.g., PVC, polyethylene).
- **Typical examples:** PVC door frames, plastic-clad frames.
- **Best fit when:** Lightweight, weather-resistant, low-maintenance use; common in residential interiors or humid climates.
**4418.1X,4418.2X – Wood**
- **Defining trait:** Made from natural wood (softwood or hardwood).
- **Typical examples:** Solid oak frames, pine door frames.
- **Best fit when:** Traditional aesthetics, high-end finishes, or natural material preference.
**6802.2X,6802.9X – Stone**
- **Defining trait:** Made from monumental or building stone (e.g., granite, marble).
- **Typical examples:** Stone-clad door frames in historic or luxury buildings.
- **Best fit when:** Architectural grandeur, high durability, or heritage-style construction.
**6810.99 – Cement Concrete / Artificial Stone**
- **Defining trait:** Made from cement-based materials (e.g., concrete, fiber-reinforced cement).
- **Typical examples:** Concrete door frames in industrial or commercial buildings.
- **Best fit when:** High strength, fire resistance, or outdoor use.
**6811.89 – Asbestos Cement / Cellulose Fiber Cement**
- **Defining trait:** Made from cement with fiber reinforcement (asbestos or cellulose).
- **Typical examples:** Older industrial door frames; now largely phased out due to asbestos.
- **Best fit when:** Legacy construction, non-asbestos versions used in durable applications.
**7308.30 – Iron / Steel**
- **Defining trait:** Made from ferrous metal (iron or steel).
- **Typical examples:** Steel-reinforced door frames, security doors.
- **Best fit when:** High security, fire resistance, or structural strength needed.
**7508 – Nickel**
- **Defining trait:** Made primarily from nickel (rare; often alloyed).
- **Typical examples:** Specialty industrial or marine-grade frames.
- **Best fit when:** Extreme corrosion resistance or high-temperature environments.
**7610.10 – Aluminium**
- **Defining trait:** Made from aluminum, lightweight and corrosion-resistant.
- **Typical examples:** Modern window/door systems, curtain wall frames.
- **Best fit when:** Contemporary design, energy efficiency, or coastal exposure.
**7907.00 – Zinc**
- **Defining trait:** Made from zinc (often as coating or alloy).
- **Typical examples:** Zinc-coated steel frames, decorative architectural elements.
- **Best fit when:** Aesthetic finish, corrosion protection, or decorative use.
## Key differences
| Material | Weight | Durability | Corrosion Resistance | Common Use Case |
|----------------|----------|------------|------------------------|--------------------------|
| Plastic | Light | Medium | High | Residential, interiors |
| Wood | Medium | Low–Medium | Low (unless treated) | Traditional, aesthetic |
| Stone | Heavy | Very High | High | Luxury, heritage |
| Concrete | Heavy | Very High | High | Industrial, commercial |
| Asbestos Cement| Heavy | High | Medium | Older buildings (phased) |
| Iron/Steel | Heavy | Very High | Low (unless coated) | Security, structural |
| Nickel | Medium | Very High | Very High | Specialized environments |
| Aluminium | Light | High | Very High | Modern, energy-efficient |
| Zinc | Medium | Medium | High | Decorative, protective |
## How to choose
- Is the frame made of plastic (e.g., PVC)? → 3925.20
- Is it solid wood or wood-based? → 4418.1X,4418.2X
- Is it stone (granite, marble) or stone-clad? → 6802.2X,6802.9X
- Is it concrete or fiber-reinforced cement? → 6810.99
- Does it contain asbestos or cellulose fiber in cement? → 6811.89
- Is it made of steel or iron? → 7308.30
- Is it primarily nickel (rare)? → 7508
- Is it aluminum (lightweight, modern)? → 7610.10
- Is it zinc-coated or decorative zinc? → 7907.00
## Overlaps & pitfalls
- **Plastic vs. PVC:** "Plastic" may include non-PVC types; confirm material if precision needed.
- **Aluminium vs. Steel:** Both used in modern frames; distinguish by weight and corrosion resistance.
- **Asbestos cement:** Use only for legacy items; avoid unless certified safe.
- **Zinc vs. Steel:** Zinc is often a coating, not the base material—check if frame is zinc-plated or solid.
- **No priority rule given:** Choose based on the product’s MAIN material and primary function