## Common ground
All options refer to shelves used in household, storage, or display settings.
## Options at a glance
**3924.90 – Plastic (hygienic use)**
- **Defining trait:** Made of plastic and intended for hygienic environments like bathrooms.
- **Typical examples:** Shower shelf, bathtub shelf, bathroom storage shelf.
- **Best fit when:** Used in wet or sanitary areas; designed for moisture resistance.
**3926.90 – Plastic (display/storage)**
- **Defining trait:** Made of plastic for general storage or retail product display.
- **Typical examples:** Wall shelves, modular shelf systems, store display bins.
- **Best fit when:** Used in shops, offices, or homes for organizing non-hygienic items.
**4420.90 – Wooden furniture**
- **Defining trait:** Made of wood and part of larger wooden furniture (e.g., racks, hangers).
- **Typical examples:** Coat rack, hat stand, clothes brush holder.
- **Best fit when:** Part of a functional wooden furniture piece, not standalone.
**7323.9X – Iron/steel household**
- **Defining trait:** Made of iron or steel for general household use (not furniture).
- **Typical examples:** Kitchen shelves, table shelves, utility storage.
- **Best fit when:** Metal construction; used in kitchens or for heavy-duty storage.
**9403.9X – Shelved furniture**
- **Defining trait:** Shelves integrated into cabinets, bookcases, wardrobes, or wall-mounted units.
- **Typical examples:** Bookcase shelves, wardrobe interior shelves, cupboard compartments.
- **Best fit when:** Part of a larger piece of shelved furniture; not standalone.
## Key differences
| Option | Material | Primary Use | Standalone? | Part of Furniture? |
|-------|----------|-------------|-------------|--------------------|
| 3924.90 | Plastic | Hygienic areas | Yes | No |
| 3926.90 | Plastic | Display/storage | Yes | No |
| 4420.90 | Wood | Furniture piece | No (as part) | Yes |
| 7323.9X | Metal | Household use | Yes | No |
| 9403.9X | Any | Integrated furniture | No | Yes |
## How to choose
- Is it made for bathrooms or wet areas? → 3924.90
- Is it used in stores or for product display? → 3926.90
- Is it part of a wooden coat rack or hanger? → 4420.90
- Is it metal (iron/steel) and used in kitchen or general storage? → 7323.9X
- Is it inside a bookcase, wardrobe, or cupboard? → 9403.9X
## Overlaps & pitfalls
- A plastic wall shelf (3926.90) may look like a bathroom shelf (3924.90), but use determines the code.
- A wooden shelf in a coat rack (4420.90) is not standalone; if it's separate, it may fall under 3926.90 or 7323.9X.
- If a shelf is part of furniture, prioritize **9403.9X** over others—even if made of plastic or metal.
- No option clearly prioritizes "standalone" vs. "integrated"—use the product’s main function to decide