## Common ground
All options describe roller shutters based on their primary material composition.
## Options at a glance
**3925.30 – Plastic material**
- **Defining trait:** Constructed primarily from rigid or flexible plastic (e.g. PVC).
- **Typical examples:** PVC roller shutters for windows, garden sheds.
- **Best fit when:** The shutter is lightweight, weather-resistant, and not metal-based.
**4421.9X – Wooden stripes**
- **Defining trait:** Made from parallel wooden slats or natural materials like bamboo.
- **Typical examples:** Bamboo roller shutters, wooden blind-style shutters.
- **Best fit when:** The shutter uses natural, non-metallic, segmented wood or plant-based strips.
**6303 – Textile material**
- **Defining trait:** Fabric-based (e.g. canvas, polyester), often rollable and flexible.
- **Typical examples:** Outdoor sun shades, fabric roller blinds for patios.
- **Best fit when:** The shutter is soft, foldable, and used for light control or privacy.
**7019.6X,7019.7X – Woven glass fabrics**
- **Defining trait:** Made from woven fiberglass (e.g. for heat or UV resistance).
- **Typical examples:** Fire-resistant or high-temperature roller shutters.
- **Best fit when:** The shutter must withstand extreme heat, fire, or UV exposure.
**7308.30 – Steel frame & cross-sections**
- **Defining trait:** Primarily steel construction with a rigid door frame and structural sections.
- **Typical examples:** Heavy-duty security shutters for commercial buildings.
- **Best fit when:** The shutter is strong, secure, and designed for protection or industrial use.
**7616.99 – Aluminium**
- **Defining trait:** Made from aluminum alloy, lightweight yet durable.
- **Typical examples:** Modern residential shutters, balcony enclosures.
- **Best fit when:** The shutter is corrosion-resistant, lightweight, and used in coastal or modern settings.
## Key differences
| Option | Material Type | Structural Rigidity | Primary Use Case | Heat/UV Resistance |
|-------|----------------|----------------------|------------------|--------------------|
| 3925.30 | Plastic | Low to medium | Basic protection, low cost | Moderate |
| 4421.9X | Wood/Bamboo | Medium | Aesthetic, natural look | Low |
| 6303 | Textile | Low | Light control, privacy | Low |
| 7019.6X/7X | Glass fabric | High | Fire/heat resistance | Very high |
| 7308.30 | Steel | High | Security, industrial | Medium |
| 7616.99 | Aluminum | Medium-high | Modern, durable use | Medium |
## How to choose
- Is the shutter made of plastic? → 3925.30
- Are the slats made of wood or bamboo? → 4421.9X
- Is it fabric-like and flexible? → 6303
- Does it contain woven glass fibers (e.g. for fire resistance)? → 7019.6X/7019.7X
- Is it primarily steel with a rigid frame? → 7308.30
- Is it aluminum alloy, lightweight, and corrosion-resistant? → 7616.99
## Overlaps & pitfalls
A shutter may combine materials (e.g. aluminum frame with textile slats), but the **main structural material** determines classification. If unsure, prioritize the **primary load-bearing or defining component**. Avoid confusion between "aluminum" and "steel" frames—check for weight and rigidity. The term “textile” includes non-woven fabrics; if it’s stiff, it may be plastic or composite