58T System
58T System is an aluminium joinery system preferred in projects requiring superior insulation and durability with its high wall thickness and heat barrier structure.
The Başak Aluminum 58T System, with its 58 mm frame and 66 mm sash width, is ideal for wide openings and offers extra durability with a wall thickness of 1.8–2 mm. Its 18 mm thermal barrier and polyamide thermal breaks provide excellent thermal insulation.
The Euro-standard compatible accessory channel ensures fast and easy installation. EPDM material used in all gaskets delivers long-lasting sealing and insulation. Supporting glass thicknesses from 4–34 mm, the system also includes a central gasket that blocks water and dust, enhancing functionality. The secure drainage system and corner cleat offer both aesthetic and safe corner connections.
| Frame Width | 58 mm |
| Sash Width | 66 mm |
| Wall Thickness | 1.8 – 2 mm |
| Thermal Barrier | 18 mm |
| Thermal Transmittance | Uf = 2.96 W/m²K |
| Accessory Channel | Euro-standard compatible |
| Thermal Breaks | Polyamide |
| Gaskets | EPDM |
| Glass Thickness Range | 4 – 34 mm |
| Central Gasket | Water and dust blocking |
| Corner Joint | With corner cleat |
| Air/Water Drainage | Secure system |
| Special Profiles | Compatible with standard and custom angles |
- Long-lasting and high durability with increased wall thickness
- Superior thermal insulation with 18 mm thermal barrier
- Quick and easy installation with Euro-standard accessory channel
- Enhanced insulation and sealing with polyamide breaks and EPDM gaskets
- Compatible with glass thicknesses between 4–34 mm
- Central gasket for maximum sealing against water and dust
- Secure and aesthetic corner connection with cleat
- Reliable air and water drainage system for long-lasting performance
- Functional design suitable for both standard and custom angle projects






