## Common ground
All options are gutter guards—devices installed on roofs to prevent debris from clogging gutters.
## Options at a glance
**3925.90 – Plastic gutter guards**
- **Defining trait:** Made primarily from plastic, often lightweight and low-cost.
- **Typical examples:** Polypropylene mesh guards, solid plastic covers.
- **Best fit when:** Budget-friendly installation, light debris load, or use in non-industrial settings.
**7326.90 – Steel gutter guards**
- **Defining trait:** Constructed from steel, typically in mesh or perforated form for durability and strength.
- **Typical examples:** Galvanized steel mesh, heavy-duty steel screens.
- **Best fit when:** High durability needed, exposure to harsh weather, or long-term structural use.
**7604.29 – Aluminum gutter guard**
- **Defining trait:** Made from aluminum, offering corrosion resistance and moderate strength.
- **Typical examples:** Aluminum mesh, extruded aluminum covers.
- **Best fit when:** Corrosion-prone environments (e.g., coastal areas), lightweight yet durable solution.
## Key differences
| Feature | Plastic (3925.90) | Steel (7326.90) | Aluminum (7604.29) |
|------------------|-------------------|-----------------|--------------------|
| Material | Plastic | Steel | Aluminum |
| Durability | Low to medium | High | Medium to high |
| Corrosion resistance | Low | Moderate (if galvanized) | High |
| Weight | Light | Heavy | Light |
## How to choose
- Is the guard made of plastic? → 3925.90
- Is it made of steel, especially mesh or heavy-duty form? → 7326.90
- Is it aluminum and used in a corrosive environment? → 7604.29
## Overlaps & pitfalls
A guard may combine materials (e.g., aluminum frame with plastic insert), but the primary material determines classification. The term "mesh" appears in both steel and aluminum options—use material, not form, as the key differentiator. If unsure, prioritize the **main structural material**