The Başak 58T is a thermally broken aluminum window and door joinery system designed for projects where both energy efficiency and structural durability are priorities. With an 18 mm polyamide thermal barrier and wall thickness of 1.8–2 mm, the system achieves Uf = 2.96 W/m2K while supporting glass units up to 34 mm. Euro-standard accessory channels ensure broad hardware compatibility.

Frame width: 58 mm. Sash width: 66 mm. Wall thickness: 1.8–2 mm. Thermal barrier: 18 mm polyamide. Uf = 2.96 W/m2K. Glass range: 4–34 mm. Gaskets: EPDM. Accessory channel: Euro-standard.

Polyamide thermal break insulators. EPDM perimeter gaskets. Euro-standard accessory channels. SKU 3871.