These aluminium window designs rely on suitable framing and significant expertise by the installer. Only maximum glass sizes determine the sizes possible. Crucially, there are more technical or structural considerations over and above standard window designs, such as wind deflection.

Extrusion: The billet is heated and placed onto an extrusion press, which passes it through a die and goes through several processes to ensure it is straight, strong, and of the required quality. The extrusion process includes an automatic production line composed of ingot heating, extrusion, cooling, straightening, cutting, and other processes .

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