| Name | Description |
|---|---|
| Aluminium | Old aluminium frame |
| AluminiumInsulated | Low U value aluminium frame |
| None | None |
| Pvc | Old PVC frame |
| PvcInsulated | Low U value PVC frame |
| PvcLineLoss | Old pvc frame with line losses |
| Wood | Old wooden frame |
| WoodInsulated | Low U value wooden frame |