Where can I find Wooden windows in Heiligenhaus?

Wooden windows can also be found in these cities:

Bochum Duisburg Düsseldorf Essen Haan Hattingen Hilden Mettmann Mülheim an der Ruhr Neuss Ratingen Remscheid Solingen Velbert Wuppertal Wülfrath

You can also find this in Heiligenhaus:

Fittings Windows Burglary Protection Seals