2018DIN EN ISO 12631:2018 Thermal performance of curtain walling - Calculation of thermal transmittance (ISO 12631:2017); German version EN ISO 12631:2017
2013DIN EN ISO 12631:2013 Thermal performance of curtain walling - Calculation of thermal transmittance (ISO 12631:2012); German version EN ISO 12631:2012
1970DIN EN ISO 12631 E:2010-11 Curtain wall thermal performance thermal transmittance calculation (draft)