| Size range | W3500, H3500 |
| Panel thickness | 2mm |
| Track material | Stainless steel or galvanized steel |
| Window | 0.35 kPa |
| Wind pressure resistance performance | Class 3 |
| Waterproof performance | Class 2 |
| Airtightness performance | 0.8-1.5m/s |
| Opening speed | -35℃ ~70℃ |
热门产品