WD64T is an insulated aluminium door and window system with a 24 mm thermal break and a sash load capacity of up to 130 kg.
| Frame width | 64 – 73.5 mm |
| Sash width | 72.5 mm |
| Thermal break | 24 mm |
| Profile wall thickness | 1.3 – 2 mm |
| Min. glass thickness | 10 mm |
| Max. glass thickness | 40 mm |
| Min. sash dimensions | 350 × 600 mm |
| Max. sash dimensions | 1300 × 2800 mm |
| Max. sash weight | 130 kg |
