For the building within the structure, the general contractor Ed. Züblin commissioned GIG Fassaden in Attnang with a contract of approx. EUR 9 million. Along with the engineering and construction of the atrium, the contract also includes the 1,200 m² mullion-transom façade along the ground floor as well as all inserted elements ranging from sliding and revolving doors to slats windows and aluminium doors and windows.
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