The CO2 calculation is performed for a GGL SK2068 window
installed for 40 years in a home in Würzburg Germany including
replacement of glazing after 20 years.
The example above shows the carbon footprint of a wooden, triple-glazed window (114x140cm). The CO2 calculation demonstrates how the window, during its 40 years of service life, saves more than double the amount of CO2 that goes into raw materials, manufacturing and disposal.