## Common ground
Both options refer to wood products processed for construction or structural use.
## Options at a glance
**4407 – Sawn wood, thick (>6 mm)**
- **Defining trait:** Raw, dimensionally cut wood (planks, beams) without assembly or joinery.
- **Typical examples:** Lumber for framing, timber beams, sawn planks.
- **Best fit when:** The product is unjoined, plain-cut wood used as raw material.
**4418 – Built-up wood components**
- **Defining trait:** Pre-assembled or joined wood parts made for construction use.
- **Typical examples:** Door frames, window sashes, assembled floor panels, cellular wood panels.
- **Best fit when:** The product is a manufactured component with joints, panels, or built-in structure.
## Key differences
| Feature | 4407 – Sawn wood | 4418 – Built-up components |
|-----------------------|--------------------------|-------------------------------|
| Processing | Cut only (sawing) | Assembled/joined |
| Structure | Single piece | Multiple pieces joined |
| Use | Raw material | Ready-to-install component |
| Complexity | Low | High |
## How to choose
- Is the wood cut into individual planks or beams without joining? → 4407
- Is it assembled (e.g., panels, frames, shingles) for direct installation? → 4418
## Overlaps & pitfalls
A product like a pre-assembled floor panel may fit both if it contains sawn wood and is joined. In such cases, **prioritize the main function**: if it’s sold as a ready-to-use component (e.g., floating floor), use 4418; if it’s raw lumber for on-site assembly, use 4407. The defining trait is whether it's **assembled** or not