| Stringer | 300*12mm in carbon steel |
| Tread support | 6mm in carbon steel |
| Stair tread | 45mm thickness solid wood tread |
| Closed riser | 20mm in solid wood |
| Railing # height | 36''/42''/1000mm |
| Railing | 12mm railing plate in carbon steel |
| Top handrail | 50mm in solid wood |
