## Common ground
All options describe shower and bath systems based on their primary construction material.
## Options at a glance
**3922.10 – Plastic material**
- **Defining trait:** Constructed primarily from plastic (e.g., ABS, PVC), often lightweight and moldable.
- **Typical examples:** Plastic shower trays, molded bath units, acrylic bathtubs.
- **Best fit when:** The system is lightweight, non-metallic, and has a smooth, molded surface.
**6810.99 – Cement concrete or artificial stone**
- **Defining trait:** Made from cement-based composites or engineered stone (e.g., quartz-aggregate mix).
- **Typical examples:** Cast-in-place baths, stone-effect shower bases, modular concrete units.
- **Best fit when:** The product is heavy, solid, and has a natural stone-like appearance.
**6910 – Ceramic**
- **Defining trait:** Made from fired clay or porcelain, typically glazed for water resistance.
- **Typical examples:** Porcelain bathtubs, ceramic shower trays, wall tiles integrated into systems.
- **Best fit when:** The system uses glazed ceramic tiles or solid ceramic components.
**7324.2X – Stainless steel**
- **Defining trait:** Constructed from corrosion-resistant stainless steel (e.g., 304 grade), often seamless.
- **Typical examples:** Modern walk-in showers, freestanding baths with welded joints.
- **Best fit when:** The system is metallic, durable, and has a sleek, modern finish.
**7418.20 – Copper**
- **Defining trait:** Made from copper or copper alloys, often used for aesthetic or antimicrobial properties.
- **Typical examples:** Copper bathtubs, handcrafted shower enclosures.
- **Best fit when:** The product is visibly metallic with a warm, natural copper tone.
**7615.20 – Aluminium**
- **Defining trait:** Made from lightweight, corrosion-resistant aluminum, often anodized.
- **Typical examples:** Aluminum-framed shower enclosures, lightweight bath panels.
- **Best fit when:** The system is light, modern, and uses aluminum framing or cladding.
**7907.00 – Zinc**
- **Defining trait:** Made from zinc or zinc alloys, often used for decorative or protective coatings.
- **Typical examples:** Zinc-plated shower fittings, decorative bath elements.
- **Best fit when:** The product is primarily a component (e.g., faucet, trim) made of zinc, not the main structure.
## Key differences
| Material | Weight | Durability | Aesthetic | Primary Use Case |
|------------------|----------|------------|------------------|-------------------------------|
| Plastic | Light | Moderate | Smooth, modern | Molded units, budget systems |
| Cement/concrete | Heavy | High | Natural stone | Custom, built-in installations|
| Ceramic | Medium | High | Glazed, classic | Bathtubs, tiles |
| Stainless steel | Medium | Very high | Sleek, industrial| Modern walk-in showers |
| Copper | Medium | Moderate | Warm, antique | Decorative, premium baths |
| Aluminium | Light | High | Modern, sleek | Framing, lightweight panels |
| Zinc | Light | Low–mod | Matte, decorative| Fittings, trim pieces |
## How to choose
- Is the system made of molded plastic or acrylic? → 3922.10
- Is it cast from concrete or artificial stone? → 6810.99
- Does it use glazed ceramic tiles or solid porcelain? → 6910
- Is it seamless, welded stainless steel? → 7324.2X
- Is it visibly copper with a warm tone? → 7418.20
- Is it lightweight aluminum framing or panels? → 7615.20
- Is it a small component like a faucet or trim made of zinc? → 7907.00
## Overlaps & pitfalls
- A shower with stainless steel frame and ceramic tray could fit both 7324.2X and 6910.
- Zinc is often used as a coating, not the main material—ensure it's structural, not decorative.
- Plastic systems may include metal fittings; focus on the primary material of the bath/shower unit itself.
- No priority rule given—choose based on the **main structural material**