2020UNE-EN ISO 10077-1:2020 Thermal performance of windows, doors and shutters - Calculation of thermal transmittance - Part 1: General (ISO 10077-1:2017, Corrected version 2020-02)
2010UNE-EN ISO 10077-1:2010 Thermal performance of windows, doors and shutters - Calculation of thermal transmittance - Part 1: General