## Common ground
All options are animal cages, designed to contain animals for housing, transport, or breeding.
## Options at a glance
**4421.99 – Made of wood**
- **Defining trait:** Constructed primarily from wood, offering natural insulation and lower weight.
- **Typical examples:** Wooden rabbit hutches, small bird cages with wooden frames, pet carrier boxes.
- **Best fit when:** The cage is built with solid wood panels or frames, not metal components; used for small animals in homes or farms.
**7325.10,7325.99,7326 – Made of iron or steel**
- **Defining trait:** Constructed from metal (iron/steel), providing high durability and resistance to chewing or damage.
- **Typical examples:** Industrial livestock pens, dog kennels, laboratory animal housing with welded steel frames.
- **Best fit when:** The cage has welded or bolted metal bars, mesh, or panels; used in commercial, industrial, or high-security settings.
## Key differences
| Feature | 4421.99 (Wood) | 7325.10/7325.99/7326 (Iron/Steel) |
|------------------|----------------------|-----------------------------------|
| Material | Wood | Iron or steel |
| Durability | Moderate | High |
| Resistance to chewing | Low (easily damaged) | Very high |
| Typical use | Home, small pets | Farm, lab, commercial facilities |
## How to choose
- Is the cage primarily made of wood? → 4421.99
- Does it have welded or bolted metal bars/mesh? → 7325.10/7325.99/7326
## Overlaps & pitfalls
A cage may combine wood and metal (e.g., wooden base with steel mesh sides). In such cases, the **main structural material** determines the HS Code. If the cage is mostly metal, use 7325/7326; if mostly wood, use 4421.99. Do not assume based on appearance alone—focus on dominant material and construction method