As part of a follow-up project, our corporate foundation "Lebendige Stadt" and the Schüco company installed this anti-NOX façade on the adult education center building in Cologne's city centre in April 2024 to improve the air quality in the city. This makes Cologne the first German city to test the effectiveness of such a large air filter with this façade. Continuous surveys and evaluation of the results are being carried out by the Jülich Research Center.